diff --git a/src/frontend/apps/impress/src/features/left-panel/components/ResizableLeftPanel.tsx b/src/frontend/apps/impress/src/features/left-panel/components/ResizableLeftPanel.tsx
index ebbf7ef7d..e81c17119 100644
--- a/src/frontend/apps/impress/src/features/left-panel/components/ResizableLeftPanel.tsx
+++ b/src/frontend/apps/impress/src/features/left-panel/components/ResizableLeftPanel.tsx
@@ -175,15 +175,20 @@ export const ResizableLeftPanel = ({
           aria-valuemin={Math.round(minPanelSizePercent)}
           aria-valuemax={Math.round(maxPanelSizePercent)}
           aria-valuenow={Math.round(panelSizePercent)}
-          aria-valuetext={t(`Sidebar width: {{label}}`, {
-            label: t(
-              getSidebarWidthLabel(
-                panelSizePercent,
-                minPanelSizePercent,
-                maxPanelSizePercent,
-              ),
-            ),
-          })}
+          aria-valuetext={(() => {
+            const label = getSidebarWidthLabel(
+              panelSizePercent,
+              minPanelSizePercent,
+              maxPanelSizePercent,
+            );
+            if (label === 'narrow') {
+              return t('Sidebar width: narrow');
+            }
+            if (label === 'medium') {
+              return t('Sidebar width: medium');
+            }
+            return t('Sidebar width: wide');
+          })()}
           style={{
             borderRightWidth: '1px',
             borderRightStyle: 'solid',