diff --git a/src/babillard.ml b/src/babillard.ml
index 8a355be..6b1a746 100644
--- a/src/babillard.ml
+++ b/src/babillard.ml
@@ -1,6 +1,22 @@
 open Db
 include Bindings
 
+type moderation_action =
+  | Ignore
+  | Delete
+  | Banish
+
+let moderation_action_to_string = function
+  | Ignore -> "ignore"
+  | Delete -> "delete"
+  | Banish -> "banish"
+
+let moderation_action_from_string = function
+  | "ignore" -> Some Ignore
+  | "delete" -> Some Delete
+  | "banish" -> Some Banish
+  | _ -> None
+
 type thread_data =
   { subject : string
   ; lng : float
diff --git a/src/permap.ml b/src/permap.ml
index 65547c7..517ce8d 100644
--- a/src/permap.ml
+++ b/src/permap.ml
@@ -115,11 +115,13 @@ let admin_post request =
           | Error _e as e -> e
           | Ok post -> (
             let evil_user_id = post.user_id in
-            match action with
-            | "delete" -> Babillard.try_delete_post ~user_id:evil_user_id id
-            | "banish" -> User.banish evil_user_id
-            | "ignore" -> Babillard.ignore_report id
-            | a -> Error (Format.sprintf "invalid action: `%s`" a) )
+            match Babillard.moderation_action_from_string action with
+            | None -> Error "Invalid action"
+            | Some action -> (
+              match action with
+              | Delete -> Babillard.try_delete_post ~user_id:evil_user_id id
+              | Banish -> User.banish evil_user_id
+              | Ignore -> Babillard.ignore_report id ) )
         in
         match res with
         | Error e -> render_unsafe e request
diff --git a/src/pp_babillard.ml b/src/pp_babillard.ml
index ae033ad..7ed16fd 100644
--- a/src/pp_babillard.ml
+++ b/src/pp_babillard.ml
@@ -2,6 +2,22 @@ include Bindings
 include Babillard
 open Db
 
+type moderation_action =
+  | Ignore
+  | Delete
+  | Banish
+
+let moderation_action_to_string = function
+  | Ignore -> "ignore"
+  | Delete -> "delete"
+  | Banish -> "banish"
+
+let moderation_action_from_string = function
+  | "ignore" -> Some Ignore
+  | "delete" -> Some Delete
+  | "banish" -> Some Banish
+  | _ -> None
+
 let pp_post fmt t =
   let thread_data_opt, post =
     match t with
@@ -177,16 +193,16 @@ let pp_report fmt post report request =
     Format.fprintf fmt
       {|<input value="%s" name="post_id" type="hidden"></input>|} id
   in
-  let button fmt value =
+  let button fmt action =
+    let s = moderation_action_to_string action in
     Format.fprintf fmt
       {|<button value="%s" name="action" type="submit" class="btn btn-primary">%s</button>|}
-      value
-      (String.uppercase_ascii value)
+      s (String.uppercase_ascii s)
   in
-  let form fmt value =
+  let form fmt action =
     Format.fprintf fmt {|%s %a %a </form>|}
       (Dream.form_tag ~action:url request)
-      input_post_id id button value
+      input_post_id id button action
   in
 
   Format.fprintf fmt
@@ -210,8 +226,7 @@ let pp_report fmt post report request =
     </div>
 </div><br>
 |}
-    pp_post (Post post) reporter_nick reason form "ignore" form "delete" form
-    "banish"
+    pp_post (Post post) reporter_nick reason form Ignore form Delete form Banish
 
 let admin_page_content posts reports request =
   let posts_reports = List.combine posts reports in
diff --git a/src/user.ml b/src/user.ml
index a4dc3c8..263f23b 100644
--- a/src/user.ml
+++ b/src/user.ml
@@ -321,8 +321,7 @@ let update_metadata count label content user_id =
         let^ () = Db.exec Q.upload_metadata (user_id, s) in
         Ok ()
 
-let pp_metadata fmt pair =
-  let label, content = pair in
+let pp_metadata fmt (label, content) =
   Format.fprintf fmt
     {|
 <div class="row">
@@ -332,8 +331,7 @@ let pp_metadata fmt pair =
     |}
     label content
 
-let pp_metadata_form fmt is_last count pair request =
-  let label, content = pair in
+let pp_metadata_form fmt is_last count (label, content) request =
   let form_tag = Dream.form_tag ~action:"/profile" request in
   let button_text = if is_last then "Add" else "Save" in
   Format.fprintf fmt