diff --git a/keyboards/handwired/dactyl_manuform/dactyl_manuform.h b/keyboards/handwired/dactyl_manuform/dactyl_manuform.h
index 98ac0aa533e..11c99977718 100644
--- a/keyboards/handwired/dactyl_manuform/dactyl_manuform.h
+++ b/keyboards/handwired/dactyl_manuform/dactyl_manuform.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#ifdef defined(KEYBOARD_handwired_dactyl_manuform_4x5)
+#if defined(KEYBOARD_handwired_dactyl_manuform_4x5)
 #    include "4x5.h"
 #elif defined(KEYBOARD_handwired_dactyl_manuform_4x6)
 #    include "4x6.h"