diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 1ff9768f5456..f3023bbc0b7f 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -41,6 +41,9 @@ static unsigned long number_cred_unused;
 
 static struct cred machine_cred = {
 	.usage = ATOMIC_INIT(1),
+#ifdef CONFIG_DEBUG_CREDENTIALS
+	.magic = CRED_MAGIC,
+#endif
 };
 
 /*