diff --git a/lib/sigs/bls/init.go b/lib/sigs/bls/init.go
index fdee9673f..9bc69c3a4 100644
--- a/lib/sigs/bls/init.go
+++ b/lib/sigs/bls/init.go
@@ -30,7 +30,7 @@ func (blsSigner) GenPrivate() ([]byte, error) {
 	}
 	// Note private keys seem to be serialized little-endian!
 	sk := ffi.PrivateKeyGenerateWithSeed(ikm)
-	return ([]byte)(sk[:]), nil
+	return sk[:], nil
 }
 
 func (blsSigner) ToPublic(priv []byte) ([]byte, error) {
@@ -43,7 +43,7 @@ func (blsSigner) ToPublic(priv []byte) ([]byte, error) {
 
 	pubkey := ffi.PrivateKeyPublicKey(*sk)
 
-	return ([]byte)(pubkey[:]), nil
+	return pubkey[:], nil
 }
 
 func (blsSigner) Sign(p []byte, msg []byte) ([]byte, error) {
@@ -56,7 +56,7 @@ func (blsSigner) Sign(p []byte, msg []byte) ([]byte, error) {
 
 	sig := ffi.PrivateKeySign(*sk, msg)
 
-	return ([]byte)(sig[:]), nil
+	return sig[:], nil
 }
 
 func (blsSigner) Verify(sig []byte, a address.Address, msg []byte) error {