diff --git a/src/Element.ts b/src/Element.ts
index 855e722f3..6dc46463c 100644
--- a/src/Element.ts
+++ b/src/Element.ts
@@ -676,7 +676,7 @@ class Element<Props extends ElementProps = ElementProps> {
         return '#fff';
     }
 
-    protected getInsideTextStroke(textFill: string): string {
+    protected getInsideTextStroke(textFill: string): string | undefined {
         return '#000';
     }
 
@@ -1955,4 +1955,4 @@ function animateToShallow<T>(
 }
 
 
-export default Element;
\ No newline at end of file
+export default Element;