diff --git a/rostests/winetests/msvcrt/CMakeLists.txt b/rostests/winetests/msvcrt/CMakeLists.txt
index eedc741b1f0..875f4859532 100644
--- a/rostests/winetests/msvcrt/CMakeLists.txt
+++ b/rostests/winetests/msvcrt/CMakeLists.txt
@@ -1,7 +1,8 @@
 
 add_definitions(
     -D__ROS_LONG64__
-    -D_CRT_NONSTDC_NO_DEPRECATE)
+    -D_CRT_NONSTDC_NO_DEPRECATE
+    -D__msvcrt_ulong=ULONG)
 
 list(APPEND SOURCE
     cpp.c