diff --git a/src/mining/coinbase.go b/src/mining/coinbase.go
index 5e54f14..fed9c1b 100644
--- a/src/mining/coinbase.go
+++ b/src/mining/coinbase.go
@@ -2,7 +2,6 @@ package mining
 
 import (
 	"encoding/hex"
-	"fmt"
 	"math"
 
 	txn "github.com/humblenginr/btc-miner/transaction"