diff --git a/include/fcntl.h b/include/fcntl.h
index 4627e5c13..5cebef9a9 100644
--- a/include/fcntl.h
+++ b/include/fcntl.h
@@ -61,8 +61,9 @@ int open (const char* name, int flags, ...);	/* May take a mode argument */
 int __fastcall__ close (int fd);
 int __fastcall__ write (int fd, const void* buf, unsigned count);
 int __fastcall__ read (int fd, void* buf, unsigned count);
-int mkdir (const char* name, ...);		/* May take a mode argument */
-int rmdir (const char* name);
+int __fastcall__ chdir (const char* name);
+int mkdir (const char* name, ...);	  	/* May take a mode argument */
+int __fastcall__ rmdir (const char* name);
 off_t __fastcall__ lseek(int fd, off_t offset, int whence);
 
 /* Macros */