diff --git a/src/components/ConstellationWidget.tsx b/src/components/ConstellationWidget.tsx
index 9f35ba5..e5e9534 100644
--- a/src/components/ConstellationWidget.tsx
+++ b/src/components/ConstellationWidget.tsx
@@ -14,7 +14,7 @@ export function ConstellationWidget() {
   const [mousePos, setMousePos] = useState({ x: 0, y: 0 });
   const [isHovering, setIsHovering] = useState(false);
   const particlesRef = useRef<Particle[]>([]);
-  const animationRef = useRef<number>();
+  const animationRef = useRef<number | undefined>(undefined);
 
   const colors = [
     '#60A5FA', // blue-400