diff --git a/src/runtime/validator.ts b/src/runtime/validator.ts
index bbf90f89..b5b3f810 100644
--- a/src/runtime/validator.ts
+++ b/src/runtime/validator.ts
@@ -24,7 +24,7 @@ export const useChecker = (
     }
 
     // Clean up Vue scoped style attributes
-    html = typeof html === 'string' ? html.replace(/ ?data-v-[a-z0-9]+\b/g, '') : html
+    html = typeof html === 'string' ? html.replace(/ ?data-v-[-a-z0-9]+\b/g, '') : html
     const { valid, results } = validator.validateString(html)
 
     if (valid && !results.length) {