diff --git a/src/vs/workbench/contrib/chat/common/tools/builtinTools/runSubagentTool.ts b/src/vs/workbench/contrib/chat/common/tools/builtinTools/runSubagentTool.ts
index 7ae0779c395..58cc00882f6 100644
--- a/src/vs/workbench/contrib/chat/common/tools/builtinTools/runSubagentTool.ts
+++ b/src/vs/workbench/contrib/chat/common/tools/builtinTools/runSubagentTool.ts
@@ -241,7 +241,7 @@ export class RunSubagentTool extends Disposable implements IToolImpl {
 				variables: { variables: variableSet.asArray() },
 				location: ChatAgentLocation.Chat,
 				subAgentInvocationId: invocation.callId,
-				subAgentName: mode?.name.get() ?? 'subagent',
+				subAgentName: mode?.name.get(),
 				userSelectedModelId: modeModelId,
 				userSelectedTools: modeTools,
 				modeInstructions,