diff --git a/guacamole-common-js/src/main/resources/guacamole.js b/guacamole-common-js/src/main/resources/guacamole.js
index 7cfec8417..4c0b14431 100644
--- a/guacamole-common-js/src/main/resources/guacamole.js
+++ b/guacamole-common-js/src/main/resources/guacamole.js
@@ -295,6 +295,7 @@ function GuacamoleClient(display, tunnelURL) {
 
     function handleResponse(xmlhttprequest) {
 
+        var interval = null;
         var nextRequest = null;
 
         var instructionStart = 0;
@@ -310,6 +311,12 @@ function GuacamoleClient(display, tunnelURL) {
             if (xmlhttprequest.readyState == 3 ||
                 xmlhttprequest.readyState == 4) {
 
+                // Also poll every 30ms (some browsers don't repeatedly call onreadystatechange for new data)
+                if (xmlhttprequest.readyState == 3 && interval == null)
+                    interval = setInterval(parseResponse, 30);
+                else if (xmlhttprequest.readyState == 4 && interval != null)
+                    clearInterval(interval);
+
                 // Halt on error during request
                 if (xmlhttprequest.status == 0) {
                     showError("Request canceled by browser.");