diff --git a/dev-python/sniffio/metadata.xml b/dev-python/sniffio/metadata.xml
index f73ad45539..220983f82d 100644
--- a/dev-python/sniffio/metadata.xml
+++ b/dev-python/sniffio/metadata.xml
@@ -6,7 +6,7 @@
     <email>andrewammerlaan@riseup.net</email>
     <name>Andrew Ammerlaan</name>
   </maintainer>
-  <longdescription>
+  <longdescription lang="en">
 sniffio: Sniff out which async library your code is running under
 
 You're writing a library. You've decided to be ambitious, and support multiple async I/O packages, like Trio, and asyncio, and ... You've written a bunch of clever code to handle all the differences. But... how do you know which piece of clever code to run?