diff --git a/config.go b/config.go
index 39807759..bdd803b2 100644
--- a/config.go
+++ b/config.go
@@ -99,14 +99,14 @@ func defaultConfig() *Config {
 		TimestampIncrement:  defaultTimestampIncrement,
 		GetKeyPair:          nil,
 		NewBlockFromContext: NewBlockFromContext,
-		RequestTx:           func(h ...util.Uint256) {},
+		RequestTx:           func(...util.Uint256) {},
 		StopTxFlow:          func() {},
-		GetTx:               func(h util.Uint256) block.Transaction { return nil },
+		GetTx:               func(util.Uint256) block.Transaction { return nil },
 		GetVerified:         func() []block.Transaction { return make([]block.Transaction, 0) },
-		VerifyBlock:         func(b block.Block) bool { return true },
-		Broadcast:           func(m payload.ConsensusPayload) {},
-		ProcessBlock:        func(b block.Block) {},
-		GetBlock:            func(h util.Uint256) block.Block { return nil },
+		VerifyBlock:         func(block.Block) bool { return true },
+		Broadcast:           func(payload.ConsensusPayload) {},
+		ProcessBlock:        func(block.Block) {},
+		GetBlock:            func(util.Uint256) block.Block { return nil },
 		WatchOnly:           func() bool { return false },
 		CurrentHeight:       nil,
 		CurrentBlockHash:    nil,
diff --git a/dbft_test.go b/dbft_test.go
index de94b574..2fdfcb36 100644
--- a/dbft_test.go
+++ b/dbft_test.go
@@ -809,7 +809,7 @@ func (s *testState) getOptions() []Option {
 
 	verify := s.verify
 	if verify == nil {
-		verify = func(b block.Block) bool { return true }
+		verify = func(block.Block) bool { return true }
 	}
 
 	opts = append(opts, WithVerifyBlock(verify))