diff --git a/dns64/dns64.c b/dns64/dns64.c

index c79bc9c..fddbc62 100644

--- a/dns64/dns64.c

+++ b/dns64/dns64.c

@@ -685,8 +685,12 @@ dns64_operate(struct module_qstate* qstate, enum module_ev event, int id,

 	switch(event) {

 		case module_event_new:

 			/* Tag this query as being new and fall through. */

-			iq = (struct dns64_qstate*)regional_alloc(

-				qstate->region, sizeof(*iq));

+			if (!(iq = (struct dns64_qstate*)regional_alloc(

+							qstate->region, sizeof(*iq)))) {

+				log_err("out of memory");

+				qstate->ext_state[id] = module_error;

+				return;

+			}

 			qstate->minfo[id] = iq;

 			iq->state = DNS64_NEW_QUERY;

 			iq->started_no_cache_store = qstate->no_cache_store;