diff --git a/src/Editor/Undo/CClearSelectionCommand.h b/src/Editor/Undo/CClearSelectionCommand.h
index e6d48a7c..dca76200 100644
--- a/src/Editor/Undo/CClearSelectionCommand.h
+++ b/src/Editor/Undo/CClearSelectionCommand.h
@@ -13,7 +13,7 @@ class CClearSelectionCommand : public IUndoCommand
     CNodePtrList mOldSelection;
 
 public:
-    CClearSelectionCommand(CNodeSelection *pSelection)
+    explicit CClearSelectionCommand(CNodeSelection *pSelection)
         : IUndoCommand("Clear Selection"),
           mpSelection(pSelection)
     {
@@ -21,9 +21,9 @@ public:
             mOldSelection << *It;
     }
 
-    void undo() { mpSelection->SetSelectedNodes(mOldSelection.DereferenceList()); }
-    void redo() { mpSelection->Clear(); }
-    bool AffectsCleanState() const { return false; }
+    void undo() override { mpSelection->SetSelectedNodes(mOldSelection.DereferenceList()); }
+    void redo() override { mpSelection->Clear(); }
+    bool AffectsCleanState() const override { return false; }
 };
 
 #endif // CCLEARSELECTIONCOMMAND_H