diff --git a/src/worldshaperStudio/popupSessionStore.ts b/src/worldshaperStudio/popupSessionStore.ts
index fb78aa7..7d840a6 100644
--- a/src/worldshaperStudio/popupSessionStore.ts
+++ b/src/worldshaperStudio/popupSessionStore.ts
@@ -1,6 +1,6 @@
 import { createDebouncedCallback } from "./debounce";
 
-const TOOL_WINDOW_LAYOUT_STORAGE_KEY = "worldshaper:studio:tool-windows:v2";
+const TOOL_WINDOW_LAYOUT_STORAGE_KEY = "worldshaper:studio:tool-windows:v1";
 
 type ToolWindowMode = "inline" | "floating";