diff --git a/frontend/src/components/FlexPanel.tsx b/frontend/src/components/FlexPanel.tsx
index 8d57f86..f3b62e4 100644
--- a/frontend/src/components/FlexPanel.tsx
+++ b/frontend/src/components/FlexPanel.tsx
@@ -725,7 +725,7 @@ export function FlexPanel({ onCWSpeed, onReportRST }: { onCWSpeed?: (wpm: number
                       const next = { ...rstChase, offset_hz: v };
                       setRstChase(next); SaveFlexRSTChase(next as any).catch(() => {});
                     }}
-                    className="w-12 h-6 rounded border border-input bg-background px-1 text-[11px] font-mono" />
+                    className="w-16 h-6 rounded border border-input bg-background px-1.5 text-[11px] font-mono" />
                   Hz
                 </label>
               )}