diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3846a1e..5c8bdda 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ if(UNIX)
 
 elseif(MSVC)
     set(CFLAGS "/W4")
-	set(CMAKE_C_FLAGS "$CMAKE_CFLAGS ${CFLAGS}")
+	set(CMAKE_C_FLAGS "$CMAKE_C_FLAGS ${CFLAGS}")
 endif()