diff --git a/rostests/winetests/cryptui/CMakeLists.txt b/rostests/winetests/cryptui/CMakeLists.txt
index 53fde37041b..a7a6d94c708 100644
--- a/rostests/winetests/cryptui/CMakeLists.txt
+++ b/rostests/winetests/cryptui/CMakeLists.txt
@@ -1,5 +1,4 @@
 
-add_definitions(-D__ROS_LONG64__)
 add_executable(cryptui_winetest cryptui.c testlist.c)
 set_module_type(cryptui_winetest win32cui)
 add_importlibs(cryptui_winetest cryptui crypt32 user32 msvcrt kernel32)