diff --git a/src/engine/helper/HL_String.h b/src/engine/helper/HL_String.h
index 15f52764..21b2e45a 100644
--- a/src/engine/helper/HL_String.h
+++ b/src/engine/helper/HL_String.h
@@ -15,6 +15,7 @@
 #define stricmp strcasecmp
 #endif
 
+#include <cstdint>
 
 class strx
 {