diff --git a/packages/storykit/src/lib/utils.ts b/packages/storykit/src/lib/utils.ts
index 05a080d9..3eee4811 100644
--- a/packages/storykit/src/lib/utils.ts
+++ b/packages/storykit/src/lib/utils.ts
@@ -12,6 +12,9 @@ export function cn(...inputs: ClassValue[]) {
 }
 
 export function shortenAddress(address: string, length = 4): string {
+  if (!/^0x[a-fA-F0-9]+$/.test(address)) {
+    throw new Error("Invalid address format")
+  }
   if (!address) {
     return ""
   }