diff --git a/source/build/include/compat.h b/source/build/include/compat.h
index 3140a7b26..26981dcc2 100644
--- a/source/build/include/compat.h
+++ b/source/build/include/compat.h
@@ -384,8 +384,9 @@ defined __x86_64__ || defined __amd64__ || defined _M_X64 || defined _M_IA64 ||
 ////////// DEPRECATED: Standard library prefixing //////////
 
 #ifdef _MSC_VER
-typedef intptr_t ssize_t;
+typedef int32_t ssize_t;
 #endif
+
 typedef size_t bsize_t;
 typedef ssize_t bssize_t;