diff --git a/source/types.h b/source/types.h
index f269088..ae0d511 100644
--- a/source/types.h
+++ b/source/types.h
@@ -7,4 +7,4 @@
 #define uint32 unsigned int
 #define int8  signed char
 #define int16 signed short
-#define int32 signed long int
+#define int32 signed int