diff --git a/scroll-mainnet.yml b/scroll-mainnet.yml
index 7a810b99..ba59dbe2 100644
--- a/scroll-mainnet.yml
+++ b/scroll-mainnet.yml
@@ -2,7 +2,7 @@ version: '3.1'
 
 services:
   scroll-mainnet:                         
-    image: scrolltech/l2geth:${SCROLL_GETH_VERSION:scroll-v5.8.15}
+    image: scrolltech/l2geth:${SCROLL_GETH_VERSION:-scroll-v5.8.15}
     expose: 
       # HTTP server / GraphQL API 
       - 8545                   
diff --git a/scroll-sepolia.yml b/scroll-sepolia.yml
index 21c13470..d348eaf7 100644
--- a/scroll-sepolia.yml
+++ b/scroll-sepolia.yml
@@ -2,7 +2,7 @@ version: '3.1'
 
 services:
   scroll-sepolia:                         
-    image: scrolltech/l2geth:${SCROLL_GETH_VERSION:scroll-v5.8.15}
+    image: scrolltech/l2geth:${SCROLL_GETH_VERSION:-scroll-v5.8.15}
     expose: 
       # HTTP server / GraphQL API 
       - 8545