diff --git a/lib/Kconfig.kmsan b/lib/Kconfig.kmsan
index 7251b6b59e69..cae1ddcc18e1 100644
--- a/lib/Kconfig.kmsan
+++ b/lib/Kconfig.kmsan
@@ -3,7 +3,7 @@ config HAVE_ARCH_KMSAN
 	bool
 
 config HAVE_KMSAN_COMPILER
-	def_bool CC_IS_CLANG
+	def_bool $(cc-option,-fsanitize=kernel-memory)
 
 config KMSAN
 	bool "KMSAN: detector of uninitialized values use"