diff --git a/key.c b/key.c
index 8b4e78df2..72efc0ee2 100644
--- a/key.c
+++ b/key.c
@@ -287,7 +287,7 @@ luaA_keystore(keyb_t *key, const char *str, ssize_t len)
  * \lparam A function to execute on key release.
  * \lreturn The key.
  */
-int
+static int
 luaA_key_new(lua_State *L)
 {
     size_t i, len;
diff --git a/key.h b/key.h
index 796872b9e..63de678bd 100644
--- a/key.h
+++ b/key.h
@@ -59,6 +59,4 @@ int luaA_key_array_get(lua_State *, keybindings_t *);
 
 void window_grabkeys(xcb_window_t, keybindings_t *);
 
-int luaA_key_new(lua_State *);
-
 #endif