diff --git a/Assets/Fungus/Flowchart/Editor/FlowchartWindow.cs b/Assets/Fungus/Flowchart/Editor/FlowchartWindow.cs
index 1fd8da29..ee867c8c 100755
--- a/Assets/Fungus/Flowchart/Editor/FlowchartWindow.cs
+++ b/Assets/Fungus/Flowchart/Editor/FlowchartWindow.cs
@@ -61,7 +61,8 @@ namespace Fungus
 				return;
 			}
 
-			if (flowchart.selectedBlock != null)
+			if (Selection.activeGameObject == null &&
+				flowchart.selectedBlock != null)
 			{
 			    if (blockInspector == null)
 				{