diff --git a/components/tooltip/placements.ts b/components/tooltip/placements.ts
index dc90048b8..b89a794e9 100644
--- a/components/tooltip/placements.ts
+++ b/components/tooltip/placements.ts
@@ -37,7 +37,7 @@ export function getOverflowOptions(autoAdjustOverflow?: boolean | AdjustOverflow
 
 export default function getPlacements(config: PlacementsConfig) {
   const {
-    arrowWidth = 5,
+    arrowWidth = 4,
     horizontalArrowShift = 16,
     verticalArrowShift = 8,
     autoAdjustOverflow,
diff --git a/components/tooltip/style/index.ts b/components/tooltip/style/index.tsx
similarity index 100%
rename from components/tooltip/style/index.ts
rename to components/tooltip/style/index.tsx