diff --git a/src/html5/js/Client.js b/src/html5/js/Client.js
index 8c5c5276b9..5c50af9366 100644
--- a/src/html5/js/Client.js
+++ b/src/html5/js/Client.js
@@ -2742,7 +2742,7 @@ XpraClient.prototype._process_draw_queue = function(packet, ctx){
 					ctx.request_redraw(win);
 				}
 				else {
-					decode_time = Math.round(1000*(Utilities.monotonicTime() - start));
+					decode_time = Math.round(Utilities.monotonicTime() - start);
 				}
 				ctx.debug("draw", "decode time for ", coding, " sequence ", packet_sequence, ": ", decode_time, ", flush=", flush);
 				send_damage_sequence(decode_time, error || "");