diff --git a/api/index.js b/api/index.js
index b449d43b..fff95808 100644
--- a/api/index.js
+++ b/api/index.js
@@ -46,6 +46,8 @@ export default async (req, res) => {
   if (locale && !isLocaleAvailable(locale)) {
     return res.send(renderError("Something went wrong", "Language not found"));
   }
+  
+  theme = theme.replace(/-/g, "_")
 
   try {
     const stats = await fetchStats(