diff --git a/kitty/state.c b/kitty/state.c
index 5a404f882..1ca1be2db 100644
--- a/kitty/state.c
+++ b/kitty/state.c
@@ -149,9 +149,6 @@ remove_window(id_type os_window_id, id_type tab_id, id_type id) {
     END_WITH_TAB;
 }
 
-static inline void
-no_op_on_window(Window *w UNUSED) {}
-
 typedef struct {
     unsigned int num_windows, capacity;
     Window *windows;