diff --git a/keyboards/ymdk_np21/ymdk_np21.c b/keyboards/ymdk_np21/ymdk_np21.c
index 5bf159758..b7c2001a4 100644
--- a/keyboards/ymdk_np21/ymdk_np21.c
+++ b/keyboards/ymdk_np21/ymdk_np21.c
@@ -30,7 +30,7 @@ void led_init_ports(void) {
 
 bool led_update_kb(led_t led_state) {
     if (led_update_user(led_state)) {
-        writePin(D0, !led_state.num_lock);
+        writePin(D0, led_state.num_lock);
     }
     return true;
 }