diff --git a/packages/config/src/forkConfig/index.ts b/packages/config/src/forkConfig/index.ts
index 1869ca0ebfd2..b8a3be3ced5a 100644
--- a/packages/config/src/forkConfig/index.ts
+++ b/packages/config/src/forkConfig/index.ts
@@ -61,7 +61,7 @@ export function createForkConfig(config: ChainConfig): ForkConfig {
     epoch: config.ELECTRA_FORK_EPOCH,
     version: config.ELECTRA_FORK_VERSION,
     prevVersion: config.CAPELLA_FORK_VERSION,
-    prevForkName: ForkName.deneb,
+    prevForkName: ForkName.capella,
   };
 
   /** Forks in order order of occurence, `phase0` first */
diff --git a/packages/params/src/forkName.ts b/packages/params/src/forkName.ts
index 22e075206ff4..6306201fceee 100644
--- a/packages/params/src/forkName.ts
+++ b/packages/params/src/forkName.ts
@@ -46,5 +46,5 @@ export function isForkVerge(fork: ForkName): fork is ForkBlobs {
 
 export type ForkBlobs = Exclude<ForkWithdrawals, ForkName.capella>;
 export function isForkBlobs(fork: ForkName): fork is ForkBlobs {
-  return isForkWithdrawals(fork) && fork !== ForkName.verge;
+  return isForkVerge(fork) && fork !== ForkName.verge;
 }