diff --git a/Modules/Platform/Windows-cl.cmake b/Modules/Platform/Windows-cl.cmake
index 9e31f595e..7a892e4f5 100644
--- a/Modules/Platform/Windows-cl.cmake
+++ b/Modules/Platform/Windows-cl.cmake
@@ -76,7 +76,7 @@ ENDIF(CMAKE_GENERATOR MATCHES "Visual Studio 7")
 SET(CMAKE_COMPILER_SUPPORTS_PDBTYPE 1)
 IF(CMAKE_GENERATOR MATCHES "NMake Makefiles")
   EXEC_PROGRAM(${CMAKE_CXX_COMPILER} 
-    ARGS /nologo -EP ${CMAKE_ROOT}/Modules/CMakeTestNMakeCLVersion.c 
+    ARGS /nologo -EP "${CMAKE_ROOT}/Modules/CMakeTestNMakeCLVersion.c" 
     OUTPUT_VARIABLE CMAKE_COMPILER_OUTPUT 
     RETURN_VALUE CMAKE_COMPILER_RETURN
     )