diff --git a/CMakeLists.txt b/CMakeLists.txt
index 906bbcecaa..fbb4633927 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -234,6 +234,8 @@ target_compile_features(openPMD
     PUBLIC cxx_std_11
 )
 set_target_properties(openPMD PROPERTIES
+    CXX_EXTENSIONS OFF
+    CXX_STANDARD_REQUIRED ON
     POSITION_INDEPENDENT_CODE ON
 )