diff --git a/test/spritetest.cpp b/test/spritetest.cpp
index 195cd78..7fcd743 100644
--- a/test/spritetest.cpp
+++ b/test/spritetest.cpp
@@ -3,6 +3,8 @@
 #include <libgba-sprite-engine/sprites/sprite_builder.h>
 #include "gtest/gtest.h"
 
+#include <bitset>
+
 const u32 kul_data [] = {
         0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
         0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02,