diff --git a/zero-gravity/zerog.Dockerfile b/zero-gravity/zerog.Dockerfile
index 81c796b8..b8096cdc 100644
--- a/zero-gravity/zerog.Dockerfile
+++ b/zero-gravity/zerog.Dockerfile
@@ -6,11 +6,11 @@ RUN chmod +x /usr/local/bin/init.sh
 
 #RUN yum install -y curl tar gzip && yum clean all
 
-ARG OG_VERSION
-ARG OG_CHAIN_SPEC
-RUN curl -sL https://github.com/0glabs/0gchain-NG/releases/download/v${OG_VERSION}/${OG_CHAIN_SPEC}-v${OG_VERSION}.tar.gz -o /tmp/${OG_CHAIN_SPEC}-v${OG_VERSION}.tar.gz
+ARG ZERO_GRAVITY_VERSION
+ARG ZERO_GRAVITY_CHAIN_SPEC
+RUN curl -sL https://github.com/0glabs/0gchain-NG/releases/download/v${ZERO_GRAVITY_VERSION}/${ZERO_GRAVITY_CHAIN_SPEC}-v${ZERO_GRAVITY_VERSION}.tar.gz -o /tmp/${ZERO_GRAVITY_CHAIN_SPEC}-v${ZERO_GRAVITY_VERSION}.tar.gz
 RUN tar -xzf /tmp/${OG_CHAIN_SPEC}-v${OG_VERSION}.tar.gz -C /tmp
-RUN mv /tmp/${OG_CHAIN_SPEC}-v${OG_VERSION} /0g
+RUN mv /tmp/${ZERO_GRAVITY_CHAIN_SPEC}-v${ZERO_GRAVITY_VERSION} /0g
 
 RUN chmod +x /0g/bin/0gchaind
 RUN chmod +x /0g/bin/geth