diff --git a/lib/libsecureboot/openpgp/opgp_sig.c b/lib/libsecureboot/openpgp/opgp_sig.c
index df4c33e6405d..eb9c364a56a7 100644
--- a/lib/libsecureboot/openpgp/opgp_sig.c
+++ b/lib/libsecureboot/openpgp/opgp_sig.c
@@ -347,6 +347,7 @@ openpgp_verify(const char *filename,
 				break;
 			default:
 				warnx("unsupported hash algorithm: %s", hname);
+				rc = -1;
 				goto oops;
 			}
 			md->init(&mctx.vtable);