diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 1ef79aeec0..f3bda19ed1 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -2377,6 +2377,17 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
+    <key>DisableMouseWarp</key>
+    <map>
+      <key>Comment</key>
+      <string>Disable warping of the mouse to the center of the screen during alt-zoom and mouse look. Useful with certain input devices, mouse sharing programs like Synergy, or running under Parallels.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>DisableRendering</key>
     <map>
       <key>Comment</key>
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index b4c73dba26..8692cdcc57 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -2269,15 +2269,18 @@ void LLViewerWindow::handleScrollWheel(S32 clicks)
 
 void LLViewerWindow::moveCursorToCenter()
 {
-	S32 x = getWorldViewWidthScaled() / 2;
-	S32 y = getWorldViewHeightScaled() / 2;
+	if (! gSavedSettings.getBOOL("DisableMouseWarp"))
+	{
+		S32 x = getWorldViewWidthScaled() / 2;
+		S32 y = getWorldViewHeightScaled() / 2;
 	
-	//on a forced move, all deltas get zeroed out to prevent jumping
-	mCurrentMousePoint.set(x,y);
-	mLastMousePoint.set(x,y);
-	mCurrentMouseDelta.set(0,0);	
+		//on a forced move, all deltas get zeroed out to prevent jumping
+		mCurrentMousePoint.set(x,y);
+		mLastMousePoint.set(x,y);
+		mCurrentMouseDelta.set(0,0);	
 
-	LLUI::setMousePositionScreen(x, y);	
+		LLUI::setMousePositionScreen(x, y);	
+	}
 }