diff --git a/include/linux/fips.h b/include/linux/fips.h
index c6961e932fef..83f5d6f7c62d 100644
--- a/include/linux/fips.h
+++ b/include/linux/fips.h
@@ -2,7 +2,15 @@
 #ifndef _FIPS_H
 #define _FIPS_H
 
-#ifdef CONFIG_CRYPTO_FIPS
+#ifdef BUILD_FIPS140_KO
+/*
+ * In fips140.ko, enable the behavior that the upstream fips_enabled flag
+ * controls, such as the XTS weak key check.
+ */
+#define fips_enabled 1
+#define CONFIG_CRYPTO_FIPS 1
+
+#elif defined(CONFIG_CRYPTO_FIPS)
 extern int fips_enabled;
 extern struct atomic_notifier_head fips_fail_notif_chain;