diff --git a/consensus/misc/gaslimit.go b/consensus/misc/gaslimit.go
index 430f63d029..6668ee1bf2 100644
--- a/consensus/misc/gaslimit.go
+++ b/consensus/misc/gaslimit.go
@@ -36,7 +36,7 @@ func VerifyGaslimit(parentGasLimit, headerGasLimit uint64) error {
 		return fmt.Errorf("invalid gas limit: have %d, want %d +-= %d", headerGasLimit, parentGasLimit, limit-1)
 	}
 	if headerGasLimit < params.MinGasLimit {
-		return errors.New(fmt.Sprint("invalid gas limit below ", params.MinGasLimit))
+		return fmt.Errorf("invalid gas limit below %d", params.MinGasLimit)
 	}
 	return nil
 }