diff --git a/contrib/dlz/modules/wildcard/dlz_wildcard_dynamic.c b/contrib/dlz/modules/wildcard/dlz_wildcard_dynamic.c
index 3cb3ee1106..df22eaf688 100644
--- a/contrib/dlz/modules/wildcard/dlz_wildcard_dynamic.c
+++ b/contrib/dlz/modules/wildcard/dlz_wildcard_dynamic.c
@@ -224,7 +224,6 @@ dlz_lookup(const char *zone, const char *name, void *dbdata,
 	const char *p;
 	char *namebuf;
 	nrr_t *nrec;
-	bool origin = true;
 
 #if DLZ_DLOPEN_VERSION >= 2
 	UNUSED(methods);
@@ -249,9 +248,8 @@ dlz_lookup(const char *zone, const char *name, void *dbdata,
 		strncpy(namebuf, zone, len - 1);
 		namebuf[len - 1] = '\0';
 		cd->record = namebuf;
-		origin = false;
 	} else if (p == zone) {
-		cd->record = "@";
+		cd->record = (char *)"@";
 	}
 
 	/* Write info message to log */
@@ -309,7 +307,7 @@ dlz_authority(const char *zone, void *dbdata, dns_sdlzlookup_t *lookup) {
 	config_data_t *cd = (config_data_t *)dbdata;
 	char *querystring = NULL;
 	nrr_t *nrec;
-	const char *p, *name = "@";
+	const char *p;
 
 	p = shortest_match(cd->zone_pattern, zone);
 	if (p == NULL) {
@@ -325,7 +323,6 @@ dlz_authority(const char *zone, void *dbdata, dns_sdlzlookup_t *lookup) {
 	result = ISC_R_NOTFOUND;
 	nrec = DLZ_LIST_HEAD(cd->rrs_list);
 	while (nrec != NULL) {
-		bool origin;
 		if (strcmp("@", nrec->name) == 0) {
 			isc_result_t presult;
 
@@ -391,7 +388,8 @@ dlz_create(const char *dlzname, unsigned int argc, char *argv[], void **dbdata,
 	   ...) {
 	config_data_t *cd;
 	char *endp;
-	int i, def_ttl;
+	unsigned int i;
+	int def_ttl;
 	nrr_t *trec = NULL;
 	isc_result_t result;
 	const char *helper_name;