diff --git a/kernel/include/sortix/fcntl.h b/kernel/include/sortix/fcntl.h
index 8d141a8f..64127cd1 100644
--- a/kernel/include/sortix/fcntl.h
+++ b/kernel/include/sortix/fcntl.h
@@ -48,6 +48,8 @@ __BEGIN_DECLS
 #define O_NOCTTY (1<<14)
 #define O_TTY_INIT (1<<15)
 
+#define O_ACCMODE (O_READ | O_WRITE | O_EXEC | O_SEARCH)
+
 #define FD_CLOEXEC (1<<0)
 #define FD_CLOFORK (1<<1)
 
diff --git a/libc/include/fcntl.h b/libc/include/fcntl.h
index 22bcfc3b..93b3eb2f 100644
--- a/libc/include/fcntl.h
+++ b/libc/include/fcntl.h
@@ -47,9 +47,6 @@ __BEGIN_DECLS
 /* Backwards compatibility with existing systems that call it O_CREAT. */
 #define O_CREAT O_CREATE
 
-/* Compatibility with Linux and other systems that have this. */
-#define O_ACCMODE (O_READ | O_WRITE | O_EXEC | O_SEARCH)
-
 /* TODO: POSIX_FADV_* missing here */
 
 #ifndef __pid_t_defined