diff --git a/src/lib_shell/distributed_db_functors.ml b/src/lib_shell/distributed_db_functors.ml
index 230bf9f8b..8cab19058 100644
--- a/src/lib_shell/distributed_db_functors.ml
+++ b/src/lib_shell/distributed_db_functors.ml
@@ -469,57 +469,57 @@ end = struct
   let worker_loop state =
     let shutdown = Lwt_canceler.cancelation state.canceler in
     let rec loop state =
-    let timeout = compute_timeout state in
-    Lwt.choose
-      [ (state.events >|= fun _ -> ()) ; timeout ; shutdown ] >>= fun () ->
-    if Lwt.state shutdown <> Lwt.Sleep then
-      lwt_debug "terminating" >>= fun () ->
-      Lwt.return_unit
-    else if Lwt.state state.events <> Lwt.Sleep then
-      let now = Unix.gettimeofday () in
-      state.events >>= fun events ->
-      state.events <- Lwt_pipe.pop_all state.queue ;
-      Lwt_list.iter_s (process_event state now) events >>= fun () ->
-      loop state
-    else
-      lwt_debug "timeout" >>= fun () ->
-      let now = Unix.gettimeofday () in
-      let active_peers = Request.active state.param in
-      let requests =
-        Table.fold
-          (fun key { peers ; next_request ; delay } acc ->
-             if next_request > now +. 0.2 then
-               acc
-             else
-               let remaining_peers =
-                 P2p_peer.Set.inter peers active_peers in
-               if P2p_peer.Set.is_empty remaining_peers &&
-                  not (P2p_peer.Set.is_empty peers) then
-                 ( Table.remove state.pending key ; acc )
+      let timeout = compute_timeout state in
+      Lwt.choose
+        [ (state.events >|= fun _ -> ()) ; timeout ; shutdown ] >>= fun () ->
+      if Lwt.state shutdown <> Lwt.Sleep then
+        lwt_debug "terminating" >>= fun () ->
+        Lwt.return_unit
+      else if Lwt.state state.events <> Lwt.Sleep then
+        let now = Unix.gettimeofday () in
+        state.events >>= fun events ->
+        state.events <- Lwt_pipe.pop_all state.queue ;
+        Lwt_list.iter_s (process_event state now) events >>= fun () ->
+        loop state
+      else
+        lwt_debug "timeout" >>= fun () ->
+        let now = Unix.gettimeofday () in
+        let active_peers = Request.active state.param in
+        let requests =
+          Table.fold
+            (fun key { peers ; next_request ; delay } acc ->
+               if next_request > now +. 0.2 then
+                 acc
                else
-                 let requested_peer =
-                   P2p_peer.Id.Set.random_elt
-                     (if P2p_peer.Set.is_empty remaining_peers
-                      then active_peers
-                      else remaining_peers) in
-                 let next = { peers = remaining_peers ;
-                              next_request = now +. delay ;
-                              delay = delay *. 1.5 } in
-                 Table.replace state.pending key next ;
-                 let requests =
-                   try key :: P2p_peer.Map.find requested_peer acc
-                   with Not_found -> [key] in
-                 P2p_peer.Map.add requested_peer requests acc)
-          state.pending P2p_peer.Map.empty in
-      P2p_peer.Map.iter (Request.send state.param) requests ;
-      P2p_peer.Map.fold begin fun peer request acc ->
-        acc >>= fun () ->
-        Lwt_list.iter_s (fun key ->
-            lwt_debug "requested %a from %a"
-              Hash.pp key P2p_peer.Id.pp_short peer)
-          request
-      end requests Lwt.return_unit >>= fun () ->
-      loop state
+                 let remaining_peers =
+                   P2p_peer.Set.inter peers active_peers in
+                 if P2p_peer.Set.is_empty remaining_peers &&
+                    not (P2p_peer.Set.is_empty peers) then
+                   ( Table.remove state.pending key ; acc )
+                 else
+                   let requested_peer =
+                     P2p_peer.Id.Set.random_elt
+                       (if P2p_peer.Set.is_empty remaining_peers
+                        then active_peers
+                        else remaining_peers) in
+                   let next = { peers = remaining_peers ;
+                                next_request = now +. delay ;
+                                delay = delay *. 1.5 } in
+                   Table.replace state.pending key next ;
+                   let requests =
+                     try key :: P2p_peer.Map.find requested_peer acc
+                     with Not_found -> [key] in
+                   P2p_peer.Map.add requested_peer requests acc)
+            state.pending P2p_peer.Map.empty in
+        P2p_peer.Map.iter (Request.send state.param) requests ;
+        P2p_peer.Map.fold begin fun peer request acc ->
+          acc >>= fun () ->
+          Lwt_list.iter_s (fun key ->
+              lwt_debug "requested %a from %a"
+                Hash.pp key P2p_peer.Id.pp_short peer)
+            request
+        end requests Lwt.return_unit >>= fun () ->
+        loop state
     in
     loop state