diff --git a/AppKit/CPTableView.j b/AppKit/CPTableView.j
index fe91360b3..d07f3d19a 100644
--- a/AppKit/CPTableView.j
+++ b/AppKit/CPTableView.j
@@ -194,6 +194,7 @@ CPTableViewFirstColumnOnlyAutoresizingStyle = 5;
     SEL         _doubleAction;
     unsigned    _columnAutoResizingStyle;
 
+    int         _lastTrackedRowIndex;
     CGPoint     _originalMouseDownPoint;
     BOOL        _verticalMotionCanDrag;
     unsigned    _destinationDragStyle;
@@ -2654,8 +2655,11 @@ CPTableViewFirstColumnOnlyAutoresizingStyle = 5;
     }
 
     _isSelectingSession = YES;
-    if(row >= 0)
+    if(row >= 0 && row !== _lastTrackedRowIndex)
+    {
+        _lastTrackedRowIndex = row;
         [self _updateSelectionWithMouseAtRow:row];
+    }
 
     if ((_implementedDataSourceMethods & CPTableViewDataSource_tableView_setObjectValue_forTableColumn_row_)
         && !_trackingPointMovedOutOfClickSlop)