diff --git a/crypto/asymmetric_keys/pkcs7_trust.c b/crypto/asymmetric_keys/pkcs7_trust.c
index 1f4e25f10049c2645c2a421b07bb21fdaf1c0857..598906b1e28d37e264058276a2dfd3d9263af4b1 100644
--- a/crypto/asymmetric_keys/pkcs7_trust.c
+++ b/crypto/asymmetric_keys/pkcs7_trust.c
@@ -106,6 +106,7 @@ static int pkcs7_validate_trust_one(struct pkcs7_message *pkcs7,
 		pr_devel("sinfo %u: Direct signer is key %x\n",
 			 sinfo->index, key_serial(key));
 		x509 = NULL;
+		sig = sinfo->sig;
 		goto matched;
 	}
 	if (PTR_ERR(key) != -ENOKEY)