diff --git a/cmake/CompileFlags.cmake b/cmake/CompileFlags.cmake
index 4297447e4b..eb5ca74f9a 100644
--- a/cmake/CompileFlags.cmake
+++ b/cmake/CompileFlags.cmake
@@ -65,7 +65,7 @@ macro(compile_flags)
             -Wformat-security
             -Wformat=2
             -Winit-self
-            -Wnon-virtual-dtor
+            "$<$<COMPILE_LANGUAGE:CXX>:-Wnon-virtual-dtor>"
 
             # Often parameters are unused, which is fine.
             -Wno-unused-parameter