diff --git a/accounts/abi/bind/topics.go b/accounts/abi/bind/topics.go
index 24c9815eee..7b64f03347 100644
--- a/accounts/abi/bind/topics.go
+++ b/accounts/abi/bind/topics.go
@@ -106,8 +106,7 @@ func genIntType(rule int64, size uint) []byte {
 		// extended to common.Hashlength bytes.
 		topic = [common.HashLength]byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}
 	}
-	var i uint
-	for i = 0; i < size; i++ {
+	for i := uint(0); i < size; i++ {
 		topic[common.HashLength-i-1] = byte(rule >> (i * 8))
 	}
 	return topic[:]