Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingGuiPlugin.cs
===================================================================
diff -u -rb98bf88b9a483d6fe9669cf2dd207f4c65e7b5f1 -re87c9b5011f0f941594f70f2384877351797d445
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingGuiPlugin.cs	(.../PipingGuiPlugin.cs)	(revision b98bf88b9a483d6fe9669cf2dd207f4c65e7b5f1)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingGuiPlugin.cs	(.../PipingGuiPlugin.cs)	(revision e87c9b5011f0f941594f70f2384877351797d445)
@@ -830,12 +830,7 @@
 
         private bool PipingCalculationGroupContextCanDrag(PipingCalculationGroupContext nodeData, object parentData)
         {
-            if (parentData is PipingFailureMechanismContext)
-            {
-                return false;
-            }
-
-            return true;
+            return !(parentData is PipingFailureMechanismContext);
         }
 
         private bool PipingCalculationGroupContextCanDropOrCanInsert(object draggedData, object targetData)
@@ -852,12 +847,7 @@
             }
 
             var groupContext = item as PipingCalculationGroupContext;
-            if (groupContext != null)
-            {
-                return groupContext.WrappedData;
-            }
-
-            return null;
+            return groupContext != null ? groupContext.WrappedData : null;
         }
 
         private bool NodesHaveSameParentFailureMechanism(object draggedData, object targetData)
@@ -877,12 +867,7 @@
             }
 
             var groupContext = data as PipingCalculationGroupContext;
-            if (groupContext != null)
-            {
-                return groupContext.PipingFailureMechanism;
-            }
-
-            return null;
+            return groupContext != null ? groupContext.PipingFailureMechanism : null;
         }
 
         private void PipingCalculationGroupContextOnDrop(object droppedData, object newParentData, object oldParentData, int position, TreeViewControl treeViewControl)