diff --git a/CMakeLists.txt b/CMakeLists.txt
index ba6296f2e88..8e44e8bb6c2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,9 +40,9 @@ add_custom_target(check-style
     USES_TERMINAL
 )
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -std=c++2a -fdiagnostics-color=always")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Werror -std=c++2a -fdiagnostics-color=always")
 if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fconcepts -Werror")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fconcepts")
 elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-overloaded-virtual")
 endif()