diff --git a/tests/suites/helpers.function b/tests/suites/helpers.function
index c772af9..7f5a6f2 100644
--- a/tests/suites/helpers.function
+++ b/tests/suites/helpers.function
@@ -25,6 +25,8 @@
 
 #ifdef _MSC_VER
 #include <basetsd.h>
+typedef UINT8 uint8_t;
+typedef INT32 int32_t;
 typedef UINT32 uint32_t;
 #define strncasecmp _strnicmp
 #define strcasecmp _stricmp