diff --git a/src/org/ntlab/deltaViewer/DeltaGraphAdapter.java b/src/org/ntlab/deltaViewer/DeltaGraphAdapter.java
index f19a666..17c9faf 100644
--- a/src/org/ntlab/deltaViewer/DeltaGraphAdapter.java
+++ b/src/org/ntlab/deltaViewer/DeltaGraphAdapter.java
@@ -131,7 +131,7 @@
 		mxICell cell = addJGraphTVertex(value);
 
 		cell.setId(id);
-		((mxCell) parent).insert(cell);			
+		((mxCell) parent).insert(cell);
 		cell.setParent((mxICell) parent);
 
 		getCellGeometry(cell).setX(x);