diff --git a/src/cfgparse.c b/src/cfgparse.c
index ca2d5d7..d693bfb 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -2182,6 +2182,7 @@
 		LIST_INIT(&curr_resolvers->nameservers);
 		LIST_INIT(&curr_resolvers->resolutions.curr);
 		LIST_INIT(&curr_resolvers->resolutions.wait);
+		SPIN_INIT(&curr_resolvers->lock);
 	}
 	else if (strcmp(args[0], "nameserver") == 0) { /* nameserver definition */
 		struct sockaddr_storage *sk;