diff --git a/slirp-android/slirp.c b/slirp-android/slirp.c
index dc94a99..e3c4c42 100644
--- a/slirp-android/slirp.c
+++ b/slirp-android/slirp.c
@@ -81,7 +81,7 @@
         return -1;
 
     dns_ip = sock_address_get_ip(new_dns_addr);
-    if (dns_ip < 0)
+    if (dns_ip == -1)
         return -1;
 
     dns_addr[dns_addr_count++] = dns_ip;