diff --git a/nx/include/switch/services/set.h b/nx/include/switch/services/set.h
index 2b40738e..8a64b8bc 100644
--- a/nx/include/switch/services/set.h
+++ b/nx/include/switch/services/set.h
@@ -5,6 +5,7 @@
  * @author yellows8
  * @copyright libnx Authors
  */
+#pragma once
 #include "../result.h"
 
 #define SET_MAX_NAME_SIZE 0x48