diff --git a/api/wakatime.js b/api/wakatime.js
index d439c5b7..f2e50688 100644
--- a/api/wakatime.js
+++ b/api/wakatime.js
@@ -38,6 +38,8 @@ 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 fetchWakatimeStats({ username, api_domain, range });