diff --git a/src/api.ml b/src/api.ml
index 9f3b99d0..dcbf036d 100644
--- a/src/api.ml
+++ b/src/api.ml
@@ -612,6 +612,31 @@ module GlobalFees = struct
     master_sig: GlobalFees.t;
   }
 
+  let verify_global_fees ~key
+      {
+        start_date;
+        end_date;
+        history_fee;
+        account_fee;
+        purse_fee;
+        history_expiration;
+        purse_account_limit;
+        purse_timeout;
+        master_sig;
+      } =
+    let open Signatures.GlobalFees in
+    verify key master_sig
+      {
+        start_date;
+        end_date;
+        purse_timeout;
+        history_expiration;
+        history_fee;
+        account_fee;
+        purse_fee;
+        purse_account_limit;
+      }
+
   let jsont =
     let make start_date end_date history_fee account_fee purse_fee
         history_expiration purse_account_limit purse_timeout master_sig =
diff --git a/src/http_management.ml b/src/http_management.ml
index 6aa0da10..f1b67201 100644
--- a/src/http_management.ml
+++ b/src/http_management.ml
@@ -250,31 +250,7 @@ module Wire_fee = struct
 end
 
 module Global_fees = struct
-  let verify (module Keys : Keys.S)
-      GlobalFees.
-        {
-          start_date;
-          end_date;
-          history_fee;
-          account_fee;
-          purse_fee;
-          history_expiration;
-          purse_account_limit;
-          purse_timeout;
-          master_sig;
-        } =
-    let open Signatures.GlobalFees in
-    verify Config.master_public_key master_sig
-      {
-        start_date;
-        end_date;
-        purse_timeout;
-        history_expiration;
-        history_fee;
-        account_fee;
-        purse_fee;
-        purse_account_limit;
-      }
+  let verify v = GlobalFees.verify_global_fees ~key:Config.master_public_key v
 
   let do_ ~db_conn v =
     let* global_fees =
@@ -309,11 +285,10 @@ module Global_fees = struct
      and once set for a timeframe, it should not change. *)
   let f req server _env =
     Logs.info (fun m -> m "POST /management/global-fees/");
-    let keys = Vif.Server.device Devices.keys server in
     let db_conn = Vif.Server.device Devices.db_connection server in
     let res =
       let* v = Vif.Request.of_json req |> unwrap_err_msg in
-      let* () = verify keys v in
+      let* () = verify v in
       let* () = do_ ~db_conn v in
       Ok ()
     in
diff --git a/test/validate_response.ml b/test/validate_response.ml
index 5c9cd3c5..4db13e8b 100644
--- a/test/validate_response.ml
+++ b/test/validate_response.ml
@@ -81,33 +81,7 @@ let keys content =
 
   let* () =
     v.global_fees
-    |> list_iter
-         (fun
-           GlobalFees.
-             {
-               start_date;
-               end_date;
-               history_fee;
-               account_fee;
-               purse_fee;
-               history_expiration;
-               purse_account_limit;
-               purse_timeout;
-               master_sig;
-             }
-         ->
-           let open Signatures.GlobalFees in
-           verify v.master_public_key master_sig
-             {
-               start_date;
-               end_date;
-               purse_timeout;
-               history_expiration;
-               history_fee;
-               account_fee;
-               purse_fee;
-               purse_account_limit;
-             })
+    |> list_iter (GlobalFees.verify_global_fees ~key:v.master_public_key)
   in
 
   let* () =