diff --git a/src/renderer/src/components/tab-bar/EditorFileTab.test.tsx b/src/renderer/src/components/tab-bar/EditorFileTab.test.tsx
index 2d51fe5e18b..79148528420 100644
--- a/src/renderer/src/components/tab-bar/EditorFileTab.test.tsx
+++ b/src/renderer/src/components/tab-bar/EditorFileTab.test.tsx
@@ -160,6 +160,7 @@ vi.mock('./SortableTab', () => ({
 vi.mock('./drop-indicator', () => ({
   ACTIVE_TAB_INDICATOR_CLASSES: 'active-tab-indicator',
   getDropIndicatorClasses: () => '',
+  getTabStripBorderClasses: () => '',
   getTabRootStateClasses: () => ''
 }))
 
diff --git a/src/renderer/src/components/tab-bar/SortableTab.rename-shortcut.test.tsx b/src/renderer/src/components/tab-bar/SortableTab.rename-shortcut.test.tsx
index 1fd737c154b..5690b163aa3 100644
--- a/src/renderer/src/components/tab-bar/SortableTab.rename-shortcut.test.tsx
+++ b/src/renderer/src/components/tab-bar/SortableTab.rename-shortcut.test.tsx
@@ -129,6 +129,7 @@ vi.mock('../sidebar/WorktreeCardHelpers', () => ({
 vi.mock('./drop-indicator', () => ({
   ACTIVE_TAB_INDICATOR_CLASSES: 'active-tab-indicator',
   getDropIndicatorClasses: () => '',
+  getTabStripBorderClasses: () => '',
   getTabRootStateClasses: () => ''
 }))