diff --git a/vncviewer/cocoa.h b/vncviewer/cocoa.h
index 0c3ac82..b5d5f76 100644
--- a/vncviewer/cocoa.h
+++ b/vncviewer/cocoa.h
@@ -33,4 +33,7 @@
 int cocoa_event_keycode(const void *event);
 int cocoa_event_keysym(const void *event);
 
+int cocoa_set_caps_lock_state(bool on);
+int cocoa_set_num_lock_state(bool on);
+
 #endif