diff --git a/Editor/NodeGroupEditor.cs b/Editor/NodeGroupEditor.cs
index 8561807..5dc36df 100644
--- a/Editor/NodeGroupEditor.cs
+++ b/Editor/NodeGroupEditor.cs
@@ -46,21 +46,28 @@ namespace XNodeEditor.NodeGroups {
 						selection.AddRange(group.GetNodes());
 						// Select Reroutes
 						foreach (Node node in target.graph.nodes) {
-							foreach (NodePort port in node.Ports) {
-								for (int i = 0; i < port.ConnectionCount; i++) {
-									List<Vector2> reroutes = port.GetReroutePoints(i);
-									for (int k = 0; k < reroutes.Count; k++) {
-										Vector2 p = reroutes[k];
-										if (p.x < group.position.x) continue;
-										if (p.y < group.position.y) continue;
-										if (p.x > group.position.x + group.width) continue;
-										if (p.y > group.position.y + group.height + 30) continue;
-										if (NodeEditorWindow.current.selectedReroutes.Any(x => x.port == port && x.connectionIndex == i && x.pointIndex == k)) continue;
-										NodeEditorWindow.current.selectedReroutes.Add(
-											new Internal.RerouteReference(port, i, k)
-										);
+							if (node != null)
+							{
+								foreach (NodePort port in node.Ports) {
+									for (int i = 0; i < port.ConnectionCount; i++) {
+										List<Vector2> reroutes = port.GetReroutePoints(i);
+										for (int k = 0; k < reroutes.Count; k++) {
+											Vector2 p = reroutes[k];
+											if (p.x < group.position.x) continue;
+											if (p.y < group.position.y) continue;
+											if (p.x > group.position.x + group.width) continue;
+											if (p.y > group.position.y + group.height + 30) continue;
+											if (NodeEditorWindow.current.selectedReroutes.Any(x => x.port == port && x.connectionIndex == i && x.pointIndex == k)) continue;
+											NodeEditorWindow.current.selectedReroutes.Add(
+												new Internal.RerouteReference(port, i, k)
+											);
+										}
 									}
-								}
+								}	
+							}
+							else
+							{
+								continue;
 							}
 						}
 						Selection.objects = selection.Distinct().ToArray();
@@ -101,4 +108,4 @@ namespace XNodeEditor.NodeGroups {
 			EditorGUIUtility.AddCursorRect(rect, MouseCursor.ResizeUpLeft);
 		}
 	}
-}
\ No newline at end of file
+}