diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
index cc230750fb..942d5d3026 100644
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.7)
 project(DeePMD)
-if (CMAKE_COMPILER_IS_GNU)
+if (CMAKE_COMPILER_IS_GNUCXX)
   set(CMAKE_LINK_WHAT_YOU_USE TRUE)
 endif ()