diff --git a/server.c b/server.c
index 1f9e165..a3297ee 100644
--- a/server.c
+++ b/server.c
@@ -177,8 +177,12 @@ int main(int argc, const char *argv[]){
     if(bind(sock, (struct sockaddr *)&addr,sizeof(addr)) < 0){
         perror("bind failed");
         return 1;
+    } else {
+        char ip_buf[INET_ADDRSTRLEN];
+        char * msg = inet_ntop(AF_INET,&addr.sin_addr,ip_buf,sizeof(ip_buf));
+        assert(msg != NULL);
+        fprintf(stderr,"server bind on %s:%d\n",msg ,SERVER_PORT);
     }
-    fprintf(stderr,"server bind on %s:%d\n",inet_ntoa(addr.sin_addr),SERVER_PORT);
 
     if(listen(sock,1) < 0){
         perror("listen failed");