diff --git a/src/tui/tui-session-actions.test.ts b/src/tui/tui-session-actions.test.ts
index 3c7b4c8b0ee1..63ee73ea7f9a 100644
--- a/src/tui/tui-session-actions.test.ts
+++ b/src/tui/tui-session-actions.test.ts
@@ -508,7 +508,6 @@ describe("tui session actions", () => {
       state,
       rememberSessionKey,
       emptySessionInfoDefaults: {
-        fastMode: true,
         verboseLevel: "on",
       },
     });
@@ -527,7 +526,7 @@ describe("tui session actions", () => {
     expect(state.sessionInfo.modelProvider).toBeUndefined();
     expect(state.sessionInfo.contextTokens).toBeNull();
     expect(state.sessionInfo.thinkingLevel).toBeUndefined();
-    expect(state.sessionInfo.fastMode).toBe(true);
+    expect(state.sessionInfo.fastMode).toBeUndefined();
     expect(state.sessionInfo.verboseLevel).toBe("on");
     expect(state.sessionInfo.inputTokens).toBeNull();
     expect(state.sessionInfo.outputTokens).toBeNull();
diff --git a/src/tui/tui.ts b/src/tui/tui.ts
index ee771dd6011c..f1a68ca600bd 100644
--- a/src/tui/tui.ts
+++ b/src/tui/tui.ts
@@ -478,7 +478,6 @@ export function resolveTuiCtrlCAction(params: {
 
 function resolveEmptySessionInfoDefaults(config: OpenClawConfig): SessionInfo {
   return {
-    fastMode: config.agents?.defaults?.fastModeDefault,
     verboseLevel: config.agents?.defaults?.verboseDefault,
   };
 }