diff --git a/extensions/copilot/src/extension/chatSessions/vscode-node/copilotCloudSessionsProvider.ts b/extensions/copilot/src/extension/chatSessions/vscode-node/copilotCloudSessionsProvider.ts
index a00a712c3b6..d44c3032d73 100644
--- a/extensions/copilot/src/extension/chatSessions/vscode-node/copilotCloudSessionsProvider.ts
+++ b/extensions/copilot/src/extension/chatSessions/vscode-node/copilotCloudSessionsProvider.ts
@@ -2566,7 +2566,7 @@ export class CopilotCloudSessionsProvider extends Disposable implements vscode.C
 			problem_statement: problemStatement,
 			event_type: 'visual_studio_code_remote_agent_tool_invoked',
 			...(customAgentName && customAgentName !== DEFAULT_CUSTOM_AGENT_ID && { custom_agent: customAgentName }),
-			...(modelName && modelName !== DEFAULT_MODEL_ID && { model_name: modelName }),
+			...(modelName && modelName !== DEFAULT_MODEL_ID && { model: modelName }),
 			...(resolvePartnerAgentName(partnerAgentName)),
 			pull_request: {
 				title,