diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3cc5ffd5..587e6701 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -106,7 +106,7 @@ else()
 	)
 endif()
 
-if(CMAKE_COMPILER_IS_GNUCXX)
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
 	set(WARNING_FLAGS
 		-Wall
 		-Wextra