diff --git a/lib/pleroma/web/api_spec/operations/timeline_operation.ex b/lib/pleroma/web/api_spec/operations/timeline_operation.ex
index 83cdbad69..95720df9f 100644
--- a/lib/pleroma/web/api_spec/operations/timeline_operation.ex
+++ b/lib/pleroma/web/api_spec/operations/timeline_operation.ex
@@ -169,7 +169,7 @@ defp instance_param do
   end
 
   defp with_muted_param do
-    Operation.parameter(:with_muted, :query, BooleanLike, "Includeactivities by muted users")
+    Operation.parameter(:with_muted, :query, BooleanLike, "Include activities by muted users")
   end
 
   defp exclude_visibilities_param do