diff --git a/src/map.c b/src/map.c
index 597907d..570937c 100644
--- a/src/map.c
+++ b/src/map.c
@@ -153,7 +153,7 @@
 	}
 
 	/* Load map. */
-	if (!pattern_read_from_file(&desc->pat, PAT_REF_MAP, arg[0].data.str.str, 0,
+	if (!pattern_read_from_file(&desc->pat, PAT_REF_MAP, arg[0].data.str.str, PAT_F_NO_DNS,
 	                            1, err, file, line))
 		return 0;