diff --git a/CMakeLists.txt b/CMakeLists.txt
index 183a3bba0..f7453caeb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -32,7 +32,9 @@ fiction_setup_options()
 fiction_global_options()
 fiction_local_options()
 
-set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g1 -fno-inline")
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g1 -fno-inline")
+endif ()
 
 # don't know if this should be set globally from here or not...
 set(CMAKE_CXX_VISIBILITY_PRESET hidden)