diff --git a/luci-app-mosdns/luasrc/view/mosdns/mosdns_log.htm b/luci-app-mosdns/luasrc/view/mosdns/mosdns_log.htm
index 4b7ec5e..6839302 100644
--- a/luci-app-mosdns/luasrc/view/mosdns/mosdns_log.htm
+++ b/luci-app-mosdns/luasrc/view/mosdns/mosdns_log.htm
@@ -12,12 +12,16 @@
             }
         );
     }
-    XHR.poll(1, '<%=url([[admin]], [[services]], [[mosdns]], [[get_log]])%>', null,
+    var scrolled = false;
+    XHR.poll(2, '<%=url([[admin]], [[services]], [[mosdns]], [[get_log]])%>', null,
         function(x, data) {
             if(x && x.status == 200) {
                 var log_textarea = document.getElementById('log_textarea');
                 log_textarea.innerHTML = x.responseText;
-                log_textarea.scrollTop = log_textarea.scrollHeight;
+                if (!scrolled) {
+                    log_textarea.scrollTop = log_textarea.scrollHeight;
+                    scrolled = true;
+                }
             }
         }
     );