diff --git a/src/vs/workbench/contrib/chat/common/model/chatModel.ts b/src/vs/workbench/contrib/chat/common/model/chatModel.ts
index e40bca3d08af3..7ea42a33e9144 100644
--- a/src/vs/workbench/contrib/chat/common/model/chatModel.ts
+++ b/src/vs/workbench/contrib/chat/common/model/chatModel.ts
@@ -2403,7 +2403,10 @@ export class ChatModel extends Disposable implements IChatModel {
 			mode: serializedInputState.mode,
 			selectedModel: serializedInputState.selectedModel && {
 				identifier: serializedInputState.selectedModel.identifier,
-				metadata: serializedInputState.selectedModel.metadata
+				metadata: {
+					...serializedInputState.selectedModel.metadata,
+					isDefaultForLocation: serializedInputState.selectedModel.metadata.isDefaultForLocation ?? {},
+				}
 			},
 			contrib: serializedInputState.contrib,
 			inputText: serializedInputState.inputText,