Index: uspace/lib/libc/include/ipc/dev_iface.h
===================================================================
--- uspace/lib/libc/include/ipc/dev_iface.h	(revision f4ef3c2d00beac7711a88e05770f36ab0bc9411b)
+++ uspace/lib/libc/include/ipc/dev_iface.h	(revision f619943a9617951fa5add062030a723ce071249a)
@@ -45,6 +45,7 @@
 #define DEV_IFACE_IDX(id) ((id) - IPC_FIRST_USER_METHOD)
 
-#define DEV_IFACE_COUNT DEV_IFACE_MAX
-#define DEV_FIRST_CUSTOM_METHOD DEV_IFACE_MAX
+#define DEV_IFACE_COUNT 				DEV_IFACE_MAX
+#define DEV_FIRST_CUSTOM_METHOD_IDX 	DEV_IFACE_MAX
+#define DEV_FIRST_CUSTOM_METHOD 		DEV_IFACE_ID(DEV_FIRST_CUSTOM_METHOD_IDX)