diff --git a/apps/app_queue.c b/apps/app_queue.c
index 531297025..eb652747d 100644
--- a/apps/app_queue.c
+++ b/apps/app_queue.c
@@ -2852,8 +2852,9 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 			strcpy(di->interface, cur->interface);
 			AST_LIST_INSERT_TAIL(dialed_interfaces, di, list);
 		} else {
+			if (di)
+				ast_log(LOG_DEBUG, "Skipping dialing interface '%s' since it has already been dialed\n", di->interface);
 			AST_LIST_UNLOCK(dialed_interfaces);
-			ast_log(LOG_DEBUG, "Skipping dialing interface '%s' since it has already been dialed\n", di->interface);
 			free(tmp);
 			continue;
 		}