diff --git a/src/renderer/src/pages/home/Tabs/SettingsTab.tsx b/src/renderer/src/pages/home/Tabs/SettingsTab.tsx
index cb5e78e1..a4f3c3f3 100644
--- a/src/renderer/src/pages/home/Tabs/SettingsTab.tsx
+++ b/src/renderer/src/pages/home/Tabs/SettingsTab.tsx
@@ -246,30 +246,20 @@ const SettingsTab: FC<Props> = (props) => {
             <Row align="middle" gutter={10}>
               <Col span={24}>
                 <SegmentedContainer>
-                  <Segmented<'low' | 'medium' | 'high' | undefined>
-                    value={reasoningEffort}
+                  <Segmented
+                    value={reasoningEffort || 'off'}
                     onChange={(value) => {
-                      setReasoningEffort(value)
-                      onReasoningEffortChange(value)
+                      const typedValue = value === 'off' ? undefined : (value as 'low' | 'medium' | 'high')
+                      setReasoningEffort(typedValue)
+                      onReasoningEffortChange(typedValue)
                     }}
                     options={[
-                      {
-                        value: 'low',
-                        label: t('assistants.settings.reasoning_effort.low')
-                      },
-                      {
-                        value: 'medium',
-                        label: t('assistants.settings.reasoning_effort.medium')
-                      },
-                      {
-                        value: 'high',
-                        label: t('assistants.settings.reasoning_effort.high')
-                      },
-                      {
-                        value: undefined,
-                        label: t('assistants.settings.reasoning_effort.off')
-                      }
+                      { value: 'low', label: t('assistants.settings.reasoning_effort.low') },
+                      { value: 'medium', label: t('assistants.settings.reasoning_effort.medium') },
+                      { value: 'high', label: t('assistants.settings.reasoning_effort.high') },
+                      { value: 'off', label: t('assistants.settings.reasoning_effort.off') }
                     ]}
+                    name="group"
                     block
                   />
                 </SegmentedContainer>