Index: Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingGuiPlugin.cs
===================================================================
diff -u -rfbb37872d09f1ded75ce2209e8e48a6b64d8a78f -r0c64d8a6c718c0aa67403a16c94dd0c10f862455
--- Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingGuiPlugin.cs	(.../PipingGuiPlugin.cs)	(revision fbb37872d09f1ded75ce2209e8e48a6b64d8a78f)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Plugin/PipingGuiPlugin.cs	(.../PipingGuiPlugin.cs)	(revision 0c64d8a6c718c0aa67403a16c94dd0c10f862455)
@@ -29,6 +29,8 @@
 using Core.Common.Gui.ContextMenu;
 using Core.Common.Gui.Forms;
 using Core.Common.Gui.Forms.ProgressDialog;
+using Core.Common.Gui.Plugin;
+
 using Ringtoets.Common.Forms.Helpers;
 using Ringtoets.Common.Forms.PresentationObjects;
 using Ringtoets.Piping.Data;