Index: kernel/generic/include/sysinfo/sysinfo.h
===================================================================
--- kernel/generic/include/sysinfo/sysinfo.h	(revision 42d3be37f381c85c99f60de83e4acaeff812d699)
+++ kernel/generic/include/sysinfo/sysinfo.h	(revision 5d684e4c0dde4f587dd5aca281c366f71f72853b)
@@ -33,4 +33,7 @@
  */
 
+#ifndef KERN_SYSINFO_H_
+#define KERN_SYSINFO_H_
+
 #include <arch/types.h>
 
@@ -65,5 +68,4 @@
 #define SYSINFO_SUBINFO_FUNCTION 2
 
-
 typedef unative_t (*sysinfo_val_fn_t)(sysinfo_item_t *root);
 typedef unative_t (*sysinfo_subinfo_fn_t)(const char *subname);
@@ -84,4 +86,6 @@
 unative_t sys_sysinfo_value(unative_t ptr,unative_t len);
 
+#endif
+
 /** @}
  */