diff --git a/core/state/state_object_test.go b/core/state/state_object_test.go
index e86d3b9943..5ab69c6545 100644
--- a/core/state/state_object_test.go
+++ b/core/state/state_object_test.go
@@ -35,9 +35,7 @@ func BenchmarkCutOriginal(b *testing.B) {
 
 func BenchmarkCutsetterFn(b *testing.B) {
 	value := common.HexToHash("0x01")
-	cutSetFn := func(r rune) bool {
-		return int32(r) == int32(0)
-	}
+	cutSetFn := func(r rune) bool { return r == 0 }
 	for i := 0; i < b.N; i++ {
 		bytes.TrimLeftFunc(value[:], cutSetFn)
 	}