diff --git a/src/Web/ActivityPub.hs b/src/Web/ActivityPub.hs
index 77434e3..c43f219 100644
--- a/src/Web/ActivityPub.hs
+++ b/src/Web/ActivityPub.hs
@@ -932,7 +932,7 @@ instance ActivityPub Commit where
         (Commit id_ repo author committer title hash mdesc written mcommitted)
             =  "id"           .=   ObjURI authority id_
             <> "type"         .=   ("Commit" :: Text)
-            <> "context   "   .=   ObjURI authority repo
+            <> "context"      .=   ObjURI authority repo
             <> "attributedTo" .=+  author
             <> "committedBy"  .=+? committer
             <> "name"         .=   title