Index: uspace/lib/c/include/io/chardev.h
===================================================================
--- uspace/lib/c/include/io/chardev.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/chardev.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -31,6 +31,6 @@
  */
 
-#ifndef LIBC_IO_CHARDEV_H_
-#define LIBC_IO_CHARDEV_H_
+#ifndef _LIBC_IO_CHARDEV_H_
+#define _LIBC_IO_CHARDEV_H_
 
 #include <async.h>
Index: uspace/lib/c/include/io/chardev_srv.h
===================================================================
--- uspace/lib/c/include/io/chardev_srv.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/chardev_srv.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_CHARDEV_SRV_H_
-#define LIBC_IO_CHARDEV_SRV_H_
+#ifndef _LIBC_IO_CHARDEV_SRV_H_
+#define _LIBC_IO_CHARDEV_SRV_H_
 
 #include <adt/list.h>
Index: uspace/lib/c/include/io/charfield.h
===================================================================
--- uspace/lib/c/include/io/charfield.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/charfield.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_IO_CHARFIELD_H_
-#define LIBC_IO_CHARFIELD_H_
+#ifndef _LIBC_IO_CHARFIELD_H_
+#define _LIBC_IO_CHARFIELD_H_
 
 #include <stdbool.h>
Index: uspace/lib/c/include/io/chargrid.h
===================================================================
--- uspace/lib/c/include/io/chargrid.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/chargrid.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_IO_CHARGRID_H_
-#define LIBC_IO_CHARGRID_H_
+#ifndef _LIBC_IO_CHARGRID_H_
+#define _LIBC_IO_CHARGRID_H_
 
 #include <io/charfield.h>
Index: uspace/lib/c/include/io/color.h
===================================================================
--- uspace/lib/c/include/io/color.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/color.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_COLOR_H_
-#define LIBC_IO_COLOR_H_
+#ifndef _LIBC_IO_COLOR_H_
+#define _LIBC_IO_COLOR_H_
 
 typedef enum {
Index: uspace/lib/c/include/io/con_srv.h
===================================================================
--- uspace/lib/c/include/io/con_srv.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/con_srv.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_CON_SRV_H_
-#define LIBC_CON_SRV_H_
+#ifndef _LIBC_CON_SRV_H_
+#define _LIBC_CON_SRV_H_
 
 #include <adt/list.h>
Index: uspace/lib/c/include/io/concaps.h
===================================================================
--- uspace/lib/c/include/io/concaps.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/concaps.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_CONCAPS_H_
-#define LIBC_IO_CONCAPS_H_
+#ifndef _LIBC_IO_CONCAPS_H_
+#define _LIBC_IO_CONCAPS_H_
 
 typedef enum {
Index: uspace/lib/c/include/io/cons_event.h
===================================================================
--- uspace/lib/c/include/io/cons_event.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/cons_event.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_CONS_EVENT_H_
-#define LIBC_IO_CONS_EVENT_H_
+#ifndef _LIBC_IO_CONS_EVENT_H_
+#define _LIBC_IO_CONS_EVENT_H_
 
 #include <adt/list.h>
Index: uspace/lib/c/include/io/console.h
===================================================================
--- uspace/lib/c/include/io/console.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/console.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_CONSOLE_H_
-#define LIBC_IO_CONSOLE_H_
+#ifndef _LIBC_IO_CONSOLE_H_
+#define _LIBC_IO_CONSOLE_H_
 
 #include <time.h>
Index: uspace/lib/c/include/io/input.h
===================================================================
--- uspace/lib/c/include/io/input.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/input.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_INPUT_H_
-#define LIBC_IO_INPUT_H_
+#ifndef _LIBC_IO_INPUT_H_
+#define _LIBC_IO_INPUT_H_
 
 #include <async.h>
Index: uspace/lib/c/include/io/kbd_event.h
===================================================================
--- uspace/lib/c/include/io/kbd_event.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/kbd_event.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_KBD_EVENT_H_
-#define LIBC_IO_KBD_EVENT_H_
+#ifndef _LIBC_IO_KBD_EVENT_H_
+#define _LIBC_IO_KBD_EVENT_H_
 
 #include <adt/list.h>
Index: uspace/lib/c/include/io/keycode.h
===================================================================
--- uspace/lib/c/include/io/keycode.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/keycode.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_KEYCODE_H_
-#define LIBC_IO_KEYCODE_H_
+#ifndef _LIBC_IO_KEYCODE_H_
+#define _LIBC_IO_KEYCODE_H_
 
 /** Keycode definitions.
Index: uspace/lib/c/include/io/kio.h
===================================================================
--- uspace/lib/c/include/io/kio.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/kio.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_KIO_H_
-#define LIBC_IO_KIO_H_
+#ifndef _LIBC_IO_KIO_H_
+#define _LIBC_IO_KIO_H_
 
 #include <stddef.h>
Index: uspace/lib/c/include/io/klog.h
===================================================================
--- uspace/lib/c/include/io/klog.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/klog.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_KLOG_H_
-#define LIBC_IO_KLOG_H_
+#ifndef _LIBC_IO_KLOG_H_
+#define _LIBC_IO_KLOG_H_
 
 #include <stddef.h>
Index: uspace/lib/c/include/io/label.h
===================================================================
--- uspace/lib/c/include/io/label.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/label.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_LABEL_H_
-#define LIBC_IO_LABEL_H_
+#ifndef _LIBC_IO_LABEL_H_
+#define _LIBC_IO_LABEL_H_
 
 #include <types/label.h>
Index: uspace/lib/c/include/io/log.h
===================================================================
--- uspace/lib/c/include/io/log.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/log.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -32,6 +32,6 @@
  */
 
-#ifndef LIBC_IO_LOG_H_
-#define LIBC_IO_LOG_H_
+#ifndef _LIBC_IO_LOG_H_
+#define _LIBC_IO_LOG_H_
 
 #include <stdarg.h>
Index: uspace/lib/c/include/io/logctl.h
===================================================================
--- uspace/lib/c/include/io/logctl.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/logctl.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -31,6 +31,6 @@
  */
 
-#ifndef LIBC_IO_LOGCTL_H_
-#define LIBC_IO_LOGCTL_H_
+#ifndef _LIBC_IO_LOGCTL_H_
+#define _LIBC_IO_LOGCTL_H_
 
 #include <io/log.h>
Index: uspace/lib/c/include/io/mode.h
===================================================================
--- uspace/lib/c/include/io/mode.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/mode.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_IO_MODE_H_
-#define LIBC_IO_MODE_H_
+#ifndef _LIBC_IO_MODE_H_
+#define _LIBC_IO_MODE_H_
 
 #include <abi/fb/visuals.h>
Index: uspace/lib/c/include/io/output.h
===================================================================
--- uspace/lib/c/include/io/output.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/output.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_OUTPUT_H_
-#define LIBC_IO_OUTPUT_H_
+#ifndef _LIBC_IO_OUTPUT_H_
+#define _LIBC_IO_OUTPUT_H_
 
 #include <ipc/output.h>
Index: uspace/lib/c/include/io/pixel.h
===================================================================
--- uspace/lib/c/include/io/pixel.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/pixel.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_IO_PIXEL_H_
-#define LIBC_IO_PIXEL_H_
+#ifndef _LIBC_IO_PIXEL_H_
+#define _LIBC_IO_PIXEL_H_
 
 #include <stdint.h>
Index: uspace/lib/c/include/io/pixelmap.h
===================================================================
--- uspace/lib/c/include/io/pixelmap.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/pixelmap.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -35,6 +35,6 @@
  */
 
-#ifndef LIBC_IO_PIXELMAP_H_
-#define LIBC_IO_PIXELMAP_H_
+#ifndef _LIBC_IO_PIXELMAP_H_
+#define _LIBC_IO_PIXELMAP_H_
 
 #include <types/common.h>
Index: uspace/lib/c/include/io/pos_event.h
===================================================================
--- uspace/lib/c/include/io/pos_event.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/pos_event.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_IO_POS_EVENT_H_
-#define LIBC_IO_POS_EVENT_H_
+#ifndef _LIBC_IO_POS_EVENT_H_
+#define _LIBC_IO_POS_EVENT_H_
 
 #include <types/common.h>
Index: uspace/lib/c/include/io/printf_core.h
===================================================================
--- uspace/lib/c/include/io/printf_core.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/printf_core.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_PRINTF_CORE_H_
-#define LIBC_PRINTF_CORE_H_
+#ifndef _LIBC_PRINTF_CORE_H_
+#define _LIBC_PRINTF_CORE_H_
 
 #include <stddef.h>
Index: uspace/lib/c/include/io/serial.h
===================================================================
--- uspace/lib/c/include/io/serial.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/serial.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_SERIAL_H_
-#define LIBC_IO_SERIAL_H_
+#ifndef _LIBC_IO_SERIAL_H_
+#define _LIBC_IO_SERIAL_H_
 
 #include <async.h>
Index: uspace/lib/c/include/io/style.h
===================================================================
--- uspace/lib/c/include/io/style.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/style.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_STYLE_H_
-#define LIBC_IO_STYLE_H_
+#ifndef _LIBC_IO_STYLE_H_
+#define _LIBC_IO_STYLE_H_
 
 typedef enum {
Index: uspace/lib/c/include/io/table.h
===================================================================
--- uspace/lib/c/include/io/table.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/table.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_TABLE_H_
-#define LIBC_IO_TABLE_H_
+#ifndef _LIBC_IO_TABLE_H_
+#define _LIBC_IO_TABLE_H_
 
 #include <adt/list.h>
Index: uspace/lib/c/include/io/verify.h
===================================================================
--- uspace/lib/c/include/io/verify.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/verify.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_VERIFY_H_
-#define LIBC_IO_VERIFY_H_
+#ifndef _LIBC_IO_VERIFY_H_
+#define _LIBC_IO_VERIFY_H_
 
 #ifdef __clang__
Index: uspace/lib/c/include/io/visualizer.h
===================================================================
--- uspace/lib/c/include/io/visualizer.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/visualizer.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_VISUALIZER_H_
-#define LIBC_IO_VISUALIZER_H_
+#ifndef _LIBC_IO_VISUALIZER_H_
+#define _LIBC_IO_VISUALIZER_H_
 
 #include <async.h>
Index: uspace/lib/c/include/io/window.h
===================================================================
--- uspace/lib/c/include/io/window.h	(revision f2d88f3fc01df99a1e5292a3a395c0754a4ef3fa)
+++ uspace/lib/c/include/io/window.h	(revision fc448f5f560ea1a9a7e90a7dff181e501713aa1e)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_IO_WINDOW_H_
-#define LIBC_IO_WINDOW_H_
+#ifndef _LIBC_IO_WINDOW_H_
+#define _LIBC_IO_WINDOW_H_
 
 #include <stdbool.h>