diff --git a/scripts/cmake/CompilerSetup.cmake b/scripts/cmake/CompilerSetup.cmake
index f3fe1e20f5f60a435ed38ed43f056668db490980..4a207fdc4a4ebe8da9635a73f307bdd8d3a8dabb 100644
--- a/scripts/cmake/CompilerSetup.cmake
+++ b/scripts/cmake/CompilerSetup.cmake
@@ -83,7 +83,7 @@ if(COMPILER_IS_GCC OR COMPILER_IS_CLANG OR COMPILER_IS_INTEL)
                     required! Found version ${CMAKE_CXX_COMPILER_VERSION}.")
             endif()
         endif()
-        add_compile_options(-fext-numeric-literals)
+        add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fext-numeric-literals>)
         include(GCCSanitizer)
     endif()