diff --git a/0g.sh b/0g.sh
index 2f1c615..cd43361 100644
--- a/0g.sh
+++ b/0g.sh
@@ -236,7 +236,7 @@ cd run
 echo "请输入矿工的EVM钱包私钥，不要有0X: "
 read minerkey
 
-cat >> config.toml <<EOF
+cat > config.toml <<EOF
 miner_key = "$minerkey"
 miner_id = "$(openssl rand -hex 32)"
 EOF