diff --git a/src/http_management.ml b/src/http_management.ml
index 27f99433..5e5c64fb 100644
--- a/src/http_management.ml
+++ b/src/http_management.ml
@@ -380,30 +380,17 @@ module Wire_fee = struct
         closing_fee;
       }
 
-  let do_ ~db_conn
-      WireFeeSetupMessage.
-        {
-          wire_method;
-          master_sig_wire;
-          fee_start;
-          fee_end;
-          closing_fee;
-          wire_fee;
-        } =
+  let do_ ~db_conn (v : WireFeeSetupMessage.t) =
     let* wire_fee_opt =
-      Pg.lookup_wire_fee_by_time db_conn ~wire_method ~start_date:fee_start
-        ~end_date:fee_end
+      Pg.get_wire_fees_by_time db_conn ~wire_method:v.wire_method
+        ~start_date:v.fee_start ~end_date:v.fee_end
       |> unwrap_err_caqti
     in
     match wire_fee_opt with
-    | Some (_wire_fee, _closing_fee) -> Error "wire-fee already setup"
-    | None ->
-        let+ () =
-          Pg.insert_wire_fee db_conn ~wire_method ~start_date:fee_start
-            ~end_date:fee_end ~wire_fee ~closing_fee ~master_sig:master_sig_wire
-          |> unwrap_err_caqti
-        in
+    | [] ->
+        let+ () = Pg.insert_wire_fee db_conn v |> unwrap_err_caqti in
         ()
+    | _l -> Error "wire-fee already setup"
 
   let jsont = WireFeeSetupMessage.jsont
 
diff --git a/src/pg.ml b/src/pg.ml
index e105f946..ae12b089 100644
--- a/src/pg.ml
+++ b/src/pg.ml
@@ -329,14 +329,14 @@ let disable_auditor =
     Conn.exec update_auditor (auditor_pub, "", "", false, change_date)
 
 (* TODO return type *)
-let lookup_wire_fee_by_time =
+let get_wire_fees_by_time =
   let lookup_wire_fee_by_time =
-    Caqti_type.(t3 wire_method time time ->? t2 amount amount)
+    Caqti_type.(t3 wire_method time time ->* t2 amount amount)
       "SELECT (wire_fee).*, (closing_fee).* FROM wire_fee WHERE wire_method=$1 \
        AND end_date > $2 AND start_date < $3"
   in
   fun (module Conn : CONN) ~wire_method ~start_date ~end_date ->
-    Conn.find_opt lookup_wire_fee_by_time (wire_method, start_date, end_date)
+    Conn.collect_list lookup_wire_fee_by_time (wire_method, start_date, end_date)
 
 let insert_wire_fee =
   let insert_wire_fee =
@@ -346,15 +346,18 @@ let insert_wire_fee =
        closing_fee, master_sig) VALUES ($1, $2, $3, ($4,$5), ($6,$7), $8)"
   in
   fun (module Conn : CONN)
-    ~wire_method
-    ~start_date
-    ~end_date
-    ~wire_fee
-    ~closing_fee
-    ~master_sig
+    WireFeeSetupMessage.
+      {
+        wire_method;
+        master_sig_wire;
+        fee_start;
+        fee_end;
+        closing_fee;
+        wire_fee;
+      }
   ->
     Conn.exec insert_wire_fee
-      (wire_method, start_date, end_date, wire_fee, closing_fee, master_sig)
+      (wire_method, fee_start, fee_end, wire_fee, closing_fee, master_sig_wire)
 
 let get_global_fees =
   let get_global_fees =
@@ -368,7 +371,7 @@ let get_global_fees =
 
 let lookup_global_fees_by_time =
   let lookup_global_fees_by_time =
-    Caqti_type.(t2 time time ->? global_fee)
+    Caqti_type.(t2 time time ->* global_fee)
       "SELECT start_date, end_date, (history_fee).*, (account_fee).*, \
        (purse_fee).*, history_expiration, purse_account_limit, purse_timeout, \
        master_sig FROM global_fee WHERE end_date > $1 AND start_date < $2"