diff --git a/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/PresentationWindow.mxml b/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/PresentationWindow.mxml
index b355d9792c1ec4803dc54b09ce9c19ef99290638..67617d8224335eeaad4b4b0e13a107b323eea41a 100755
--- a/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/PresentationWindow.mxml
+++ b/bigbluebutton-client/src/org/bigbluebutton/modules/present/ui/views/PresentationWindow.mxml
@@ -299,7 +299,9 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 			}
 						
 			private function onSliderZoom():void {
-				slideView.onZoomSlide(zoomSlider.value);
+				if (UsersUtil.amIPresenter()) {
+					slideView.onZoomSlide(zoomSlider.value);
+				}
 			}
 			
 			private function onResetZoom():void {