diff --git a/config/src/main/java/org/hyperledger/besu/config/GenesisConfigFile.java b/config/src/main/java/org/hyperledger/besu/config/GenesisConfigFile.java
index d77b17c612d..33f4a67ac31 100644
--- a/config/src/main/java/org/hyperledger/besu/config/GenesisConfigFile.java
+++ b/config/src/main/java/org/hyperledger/besu/config/GenesisConfigFile.java
@@ -253,7 +253,7 @@ public String getNonce() {
    * @return the excess data gas
    */
   public String getExcessDataGas() {
-    return JsonUtil.getValueAsString(configRoot, "excessdatagas", "0x0");
+    return JsonUtil.getValueAsString(configRoot, "excessBlobGas", "0x0");
   }
 
   /**
@@ -274,7 +274,7 @@ public String getParentBeaconBlockRoot() {
    * @return the data gas used
    */
   public String getDataGasUsed() {
-    return JsonUtil.getValueAsString(configRoot, "datagasused", "0x0");
+    return JsonUtil.getValueAsString(configRoot, "blobGasUsed", "0x0");
   }
 
   /**