diff --git a/types/secp256k1/index.d.ts b/types/secp256k1/index.d.ts
index 686171565b..d5ec720a39 100644
--- a/types/secp256k1/index.d.ts
+++ b/types/secp256k1/index.d.ts
@@ -113,7 +113,7 @@ export function signatureImportLax(signature: Buffer): Buffer;
  * - Compose 32-byte scalar `s = k^-1 * (r * d + m)`. Reject nonce if `s` is zero.
  * - The signature is `(r, s)`.
  */
-export function sign(message: Buffer, privateKey: Buffer, options?: SignOptions): {signature: Buffer, recovery: number};
+export function ecdsaSign(message: Buffer, privateKey: Buffer, options?: SignOptions): {signature: Uint8Array, recovery: number};
 
 /**
  * Verify an ECDSA signature.
diff --git a/types/secp256k1/secp256k1-tests.ts b/types/secp256k1/secp256k1-tests.ts
index 03754354b1..f1104765ad 100644
--- a/types/secp256k1/secp256k1-tests.ts
+++ b/types/secp256k1/secp256k1-tests.ts
@@ -1,4 +1,4 @@
-import { SignOptions, sign } from "secp256k1";
+import { SignOptions, ecdsaSign } from "secp256k1";
 
 const opts: SignOptions = {
     data: Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72])
@@ -8,4 +8,4 @@ const message = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);
 
 const prvKey = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);
 
-sign(message, prvKey, opts);
+ecdsaSign(message, prvKey, opts);