diff --git a/Qt/Widgets/pqFlatTreeView.cxx b/Qt/Widgets/pqFlatTreeView.cxx
index 2665812..0482a27 100644
--- a/Qt/Widgets/pqFlatTreeView.cxx
+++ b/Qt/Widgets/pqFlatTreeView.cxx
@@ -155,7 +155,9 @@ pqFlatTreeViewInternal::pqFlatTreeViewInternal()
 
 
 //----------------------------------------------------------------------------
-int pqFlatTreeView::PipeLength = 4;
+namespace {
+const int pqFlatTreeViewPipeLength = 4;
+}
 
 pqFlatTreeView::pqFlatTreeView(QWidget *p)
   : QAbstractScrollArea(p)
@@ -650,7 +652,7 @@ void pqFlatTreeView::getVisibleRect(const QModelIndex &index, QRect &area) const
 
     area.setRect(xPosition, item->ContentsY,
         this->getWidthSum(item, index.column()), item->Height);
-    area.setTop(area.top() + pqFlatTreeView::PipeLength);
+    area.setTop(area.top() + pqFlatTreeViewPipeLength);
 
     // Translate the area back to widget coordinates.
     area.translate(-this->horizontalOffset(), -this->verticalOffset());
@@ -677,7 +679,7 @@ QModelIndex pqFlatTreeView::getIndexVisibleAt(const QPoint &point) const
   if(item && item->Cells.size() > 0)
     {
     // Make sure the point is past the pipe connection area.
-    if(py < item->ContentsY + pqFlatTreeView::PipeLength)
+    if(py < item->ContentsY + pqFlatTreeViewPipeLength)
       {
       return QModelIndex();
       }
@@ -727,7 +729,7 @@ QModelIndex pqFlatTreeView::getIndexCellAt(const QPoint &point) const
   if(item)
     {
     // Make sure the point is past the pipe connection area.
-    if(py < item->ContentsY + pqFlatTreeView::PipeLength)
+    if(py < item->ContentsY + pqFlatTreeViewPipeLength)
       {
       return QModelIndex();
       }
@@ -1851,7 +1853,7 @@ void pqFlatTreeView::keyPressEvent(QKeyEvent *e)
       else if(this->Behavior != pqFlatTreeView::SelectColumns)
         {
         // Find the index at the top of the current page.
-        int py = this->verticalOffset() + pqFlatTreeView::PipeLength;
+        int py = this->verticalOffset() + pqFlatTreeViewPipeLength;
         item = this->getItemAt(py);
         if(!item && this->HeaderView->isVisible())
           {
@@ -2629,7 +2631,7 @@ void pqFlatTreeView::paintEvent(QPaintEvent *e)
         // before the data.
         px = 0;
         int itemWidth = 0;
-        int itemHeight = item->Height - pqFlatTreeView::PipeLength;
+        int itemHeight = item->Height - pqFlatTreeViewPipeLength;
         if(item->RowSelected)
           {
           itemWidth = this->viewport()->width();
@@ -2638,7 +2640,7 @@ void pqFlatTreeView::paintEvent(QPaintEvent *e)
             itemWidth = this->ContentsWidth;
             }
 
-          painter.fillRect(0, item->ContentsY + pqFlatTreeView::PipeLength,
+          painter.fillRect(0, item->ContentsY + pqFlatTreeViewPipeLength,
               itemWidth, itemHeight, options.palette.highlight());
           }
 
@@ -2647,7 +2649,7 @@ void pqFlatTreeView::paintEvent(QPaintEvent *e)
           // The columns can be moved by the header. Make sure they are
           // drawn in the correct location.
           px = this->HeaderView->sectionPosition(i);
-          py = item->ContentsY + pqFlatTreeView::PipeLength;
+          py = item->ContentsY + pqFlatTreeViewPipeLength;
           columnWidth = this->HeaderView->sectionSize(i);
 
           // If the item is selected, draw a highlight in the background.
@@ -3130,8 +3132,8 @@ void pqFlatTreeView::layoutEditor()
       editWidth -= indent;
       }
 
-    int ey = item->ContentsY + pqFlatTreeView::PipeLength;
-    int editHeight = item->Height - pqFlatTreeView::PipeLength;
+    int ey = item->ContentsY + pqFlatTreeViewPipeLength;
+    int editHeight = item->Height - pqFlatTreeViewPipeLength;
 
     // Adjust the location to viewport coordinates and set the size.
     ex -= this->horizontalOffset();
@@ -3272,7 +3274,7 @@ void pqFlatTreeView::layoutItem(pqFlatTreeViewItem *item, int &point,
 
     // Add padding to the height for the vertical connection. Increment
     // the starting point for the next item.
-    item->Height += pqFlatTreeView::PipeLength;
+    item->Height += pqFlatTreeViewPipeLength;
     point += item->Height;
     }
 }
@@ -3749,7 +3751,7 @@ void pqFlatTreeView::drawBranches(QPainter &painter, pqFlatTreeViewItem *item,
   if(item->Parent->Items.size() > 1)
     {
     px -= halfIndent;
-    py = item->ContentsY + pqFlatTreeView::PipeLength + halfIndent;
+    py = item->ContentsY + pqFlatTreeViewPipeLength + halfIndent;
     int endY = py;
     if(item != item->Parent->Items.last())
       {
@@ -3779,7 +3781,7 @@ void pqFlatTreeView::drawBranches(QPainter &painter, pqFlatTreeViewItem *item,
     {
     px += halfIndent;
     painter.drawLine(px, item->ContentsY, px, item->ContentsY +
-        pqFlatTreeView::PipeLength);
+        pqFlatTreeViewPipeLength);
     }
 
   py = item->ContentsY + item->Height;
diff --git a/Qt/Widgets/pqFlatTreeView.h b/Qt/Widgets/pqFlatTreeView.h
index db468fe..abef8b9 100644
--- a/Qt/Widgets/pqFlatTreeView.h
+++ b/Qt/Widgets/pqFlatTreeView.h
@@ -321,8 +321,6 @@ private:
   bool InUpdateWidth;
   bool HeaderOwned;
   bool SelectionOwned;
-
-  static int PipeLength;
 };
 
 #endif