diff --git a/tests/catch/CMakeLists.txt b/tests/catch/CMakeLists.txt
index 9aa59126be..8de7c5539e 100644
--- a/tests/catch/CMakeLists.txt
+++ b/tests/catch/CMakeLists.txt
@@ -59,6 +59,9 @@ if(HIP_COMPILER MATCHES "nvcc")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ccbin clang")
 endif()
 
+# Disable CXX extensions (gnu++11 etc)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
 add_custom_target(build_tests)
 
 add_subdirectory(unit)