diff --git a/src/platform/3ds/main.c b/src/platform/3ds/main.c
index 727ab71fa..3042a67d8 100644
--- a/src/platform/3ds/main.c
+++ b/src/platform/3ds/main.c
@@ -4,6 +4,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#include "core/core.h"
 #ifdef M_CORE_GBA
 #include "gba/gba.h"
 #include "gba/input.h"