diff --git a/init/Kconfig b/init/Kconfig
index 036b750..4b7bac1 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -887,7 +887,7 @@
 
 config CC_IMPLICIT_FALLTHROUGH
 	string
-	default "-Wimplicit-fallthrough=5" if CC_IS_GCC
+	default "-Wimplicit-fallthrough=5" if CC_IS_GCC && $(cc-option,-Wimplicit-fallthrough=5)
 	default "-Wimplicit-fallthrough" if CC_IS_CLANG && $(cc-option,-Wunreachable-code-fallthrough)
 
 #