diff --git a/Scripts/Editor/NodeEditorAction.cs b/Scripts/Editor/NodeEditorAction.cs
index dbada4b..3a70848 100644
--- a/Scripts/Editor/NodeEditorAction.cs
+++ b/Scripts/Editor/NodeEditorAction.cs
@@ -53,7 +53,7 @@ namespace XNodeEditor {
                             }
                             Repaint();
                         }
-                    } else if (e.button == 1) {
+                    } else if (e.button == 1 || e.button == 2) {
                         panOffset += e.delta * zoom;
                         isPanning = true;
                     }