diff --git a/index.html b/index.html
index 34abd6370..35f6dd30b 100644
--- a/index.html
+++ b/index.html
@@ -210,7 +210,7 @@
                     <a class="button" data-toggle="popover" data-placement="bottom" content="Enter / Exit Full Screen" onclick='buttonClick("#fullScreen", "icon-full-screen icon-exit-full-screen");Toolbar.toggleFullScreen();'>
                         <i id="fullScreen" class="icon-full-screen"></i>
                     </a>
-                    <span id="sipCallButton">
+                    <span id="sipCallButton" style="display: none">
                         <div class="header_button_separator"></div>
                         <a class="button" data-toggle="popover" data-placement="bottom" content="Call SIP number" onclick='callSipButtonClicked();'>
                             <i class="icon-telephone"></i></a>