diff --git a/Tests/CxxOnly/CMakeLists.txt b/Tests/CxxOnly/CMakeLists.txt
index 4654f44ec..d621499cc 100644
--- a/Tests/CxxOnly/CMakeLists.txt
+++ b/Tests/CxxOnly/CMakeLists.txt
@@ -2,7 +2,7 @@
 project (CxxOnly CXX)
 
 set(CMAKE_DEBUG_POSTFIX "_test_debug_postfix")
-if(MSVC)
+if(WIN32)
   set(EXTRA_SRCS test.CPP)
 endif()
 add_library(testcxx1 STATIC libcxx1.cxx ${EXTRA_SRCS})