diff --git a/source3/libsmb/clispnego.c b/source3/libsmb/clispnego.c
index 4581ce4..d584f9f 100644
--- a/source3/libsmb/clispnego.c
+++ b/source3/libsmb/clispnego.c
@@ -126,7 +126,12 @@ bool spnego_parse_negTokenInit(TALLOC_CTX *ctx,
 	asn1_start_tag(data,ASN1_CONTEXT(0));
 	asn1_start_tag(data,ASN1_SEQUENCE(0));
 	for (i=0; asn1_tag_remaining(data) > 0 && i < ASN1_MAX_OIDS-1; i++) {
-		asn1_read_OID(data,ctx, &OIDs[i]);
+		if (!asn1_read_OID(data,ctx, &OIDs[i])) {
+			break;
+		}
+		if (data->has_error) {
+			break;
+		}
 	}
 	OIDs[i] = NULL;
 	asn1_end_tag(data);