diff --git a/Source/kwsys/CMakeLists.txt b/Source/kwsys/CMakeLists.txt
index 99a311bc2..89894e1b1 100644
--- a/Source/kwsys/CMakeLists.txt
+++ b/Source/kwsys/CMakeLists.txt
@@ -328,7 +328,6 @@ IF(KWSYS_USE_Process)
       SET(BIN_DIR ${EXECUTABLE_OUTPUT_PATH})
     ENDIF(EXECUTABLE_OUTPUT_PATH)
     
-    SET(MAKE_SYSTEM)
     SET(CFG_INTDIR "/${CMAKE_CFG_INTDIR}")
     IF(CMAKE_BUILD_TOOL MATCHES "make")
       SET(CFG_INTDIR "")