diff --git a/packages/dev/core/src/Misc/dumpTools.ts b/packages/dev/core/src/Misc/dumpTools.ts
index c52fc1dabcb..051f542de56 100644
--- a/packages/dev/core/src/Misc/dumpTools.ts
+++ b/packages/dev/core/src/Misc/dumpTools.ts
@@ -224,6 +224,7 @@ export function Dispose() {
             dumpToolsEngine.engine.dispose();
         });
     }
+    _enginePromise = null;
     _dumpToolsEngine = null;
 }