diff --git a/generate-key/Main.hs b/generate-key/Main.hs
index 0da05457932103bb1d1605f0658d571bdd569ef6..723c9aae211ddb03d50bfc218d3cec299cd13e1c 100644
--- a/generate-key/Main.hs
+++ b/generate-key/Main.hs
@@ -1,3 +1,4 @@
+-- | Generate a random Ristretto-flavored PrivacyPass signing key.
 module Main
   ( main
   ) where