diff --git a/src/dns.c b/src/dns.c
index e8801f2..282fa92 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -1205,6 +1205,12 @@
 			if (i == offset)
 				return -1;
 
+			/* ignore trailing dot */
+			if (i + 2 == str_len) {
+				i++;
+				break;
+			}
+
 			dn[offset] = (i - offset);
 			offset = i+1;
 			continue;