diff --git a/mjit_worker.c b/mjit_worker.c
index eab7501ace..a2f62448e1 100644
--- a/mjit_worker.c
+++ b/mjit_worker.c
@@ -568,7 +568,7 @@ form_args(int num, ...)
 }
 
 COMPILER_WARNING_PUSH
-#ifdef __GNUC__
+#if __has_warning("-Wdeprecated-declarations") || RUBY3_COMPILER_IS(GCC)
 COMPILER_WARNING_IGNORED(-Wdeprecated-declarations)
 #endif
 // Start an OS process of absolute executable path with arguments `argv`.