diff --git a/src/bin_client/test/test_basic.sh b/src/bin_client/test/test_basic.sh
index af63064a8..58978dd22 100755
--- a/src/bin_client/test/test_basic.sh
+++ b/src/bin_client/test/test_basic.sh
@@ -28,12 +28,12 @@ key2=bar
 key3=boo
 key4=king
 key5=queen
-key6=p256
+# key6=p256
 
 $client gen keys $key1
 $client gen keys $key2 --sig secp256k1
 $client gen keys $key3 --sig ed25519
-$client gen keys $key6 --sig p256
+# $client gen keys $key6 --sig p256
 
 $client list known identities
 $client get balance for bootstrap1
@@ -41,12 +41,12 @@ $client get balance for bootstrap1
 bake_after $client transfer 1,000 from bootstrap1 to $key1
 bake_after $client transfer 2,000 from bootstrap1 to $key2
 bake_after $client transfer 3,000 from bootstrap1 to $key3
-bake_after $client transfer 4,000 from bootstrap1 to $key6
+# bake_after $client transfer 4,000 from bootstrap1 to $key6
 
 $client get balance for $key1 | assert "1,000 ꜩ"
 $client get balance for $key2 | assert "2,000 ꜩ"
 $client get balance for $key3 | assert "3,000 ꜩ"
-$client get balance for $key6 | assert "4,000 ꜩ"
+# $client get balance for $key6 | assert "4,000 ꜩ"
 
 bake_after $client transfer 1,000 from $key2 to $key1 -fee 0
 $client get balance for $key1 | assert "2,000 ꜩ"
diff --git a/vendors/ocaml-uecc/src/uecc.ml b/vendors/ocaml-uecc/src/uecc.ml
index 7ada97dff..0a6fbe0fb 100644
--- a/vendors/ocaml-uecc/src/uecc.ml
+++ b/vendors/ocaml-uecc/src/uecc.ml
@@ -206,26 +206,28 @@ let dh (Sk (sk, c)) (Pk (pk, _)) =
   | true -> Some secret
   | false -> None
 
-external sign :
-  Bigstring.t -> Bigstring.t -> Bigstring.t -> curve -> bool =
-  "uECC_sign_stub" [@@noalloc]
+(* external sign :
+ *   Bigstring.t -> Bigstring.t -> Bigstring.t -> curve -> bool =
+ *   "uECC_sign_stub" [@@noalloc] *)
 
 external verify :
   Bigstring.t -> Bigstring.t -> Bigstring.t -> curve -> bool =
   "uECC_verify_stub" [@@noalloc]
 
-let write_sign (Sk (sk, c)) buf ~msg =
-  if Bigstring.length buf < pk_size c then 0
-  else
-    match sign sk msg buf (to_curve c) with
-    | true -> pk_size c
-    | false -> 0
+let write_sign (Sk (_sk, _c)) _buf ~msg:_ =
+  failwith "Not implemented"
+  (* if Bigstring.length buf < pk_size c then 0
+   * else
+   *   match sign sk msg buf (to_curve c) with
+   *   | true -> pk_size c
+   *   | false -> 0 *)
 
-let sign (Sk (sk, c)) msg =
-  let signature = Bigstring.create (pk_size c) in
-  match sign sk msg signature (to_curve c) with
-  | true -> Some signature
-  | false -> None
+let sign (Sk (_sk, _c)) _msg =
+  failwith "Not implemented"
+  (* let signature = Bigstring.create (pk_size c) in
+   * match sign sk msg signature (to_curve c) with
+   * | true -> Some signature
+   * | false -> None *)
 
 let verify (Pk (pk, c)) ~msg ~signature =
   if Bigstring.length signature <> pk_size c then false
diff --git a/vendors/ocaml-uecc/test/test.ml b/vendors/ocaml-uecc/test/test.ml
index 73173653a..a318a9247 100644
--- a/vendors/ocaml-uecc/test/test.ml
+++ b/vendors/ocaml-uecc/test/test.ml
@@ -164,7 +164,7 @@ let basic = [
   "export_compressed", `Quick, test_export_compressed ;
   "keypair", `Quick, test_keypair ;
   "dh", `Quick, test_dh ;
-  "sign", `Quick, test_sign ;
+  (* "sign", `Quick, test_sign ; *)
 ]
 
 let () =