diff --git a/libc/include/sys/mount.h b/libc/include/sys/mount.h
index fd7cf17..26c0e0f 100644
--- a/libc/include/sys/mount.h
+++ b/libc/include/sys/mount.h
@@ -41,9 +41,9 @@
 #define MNT_EXPIRE 4
 #define UMOUNT_NOFOLLOW 8
 
-extern int mount(const char*, const char*, const char*, unsigned long, const void*);
-extern int umount(const char*);
-extern int umount2(const char*, int);
+int mount(const char*, const char*, const char*, unsigned long, const void*);
+int umount(const char*);
+int umount2(const char*, int);
 
 __END_DECLS