diff --git a/consensus/state_processing/src/per_block_processing/process_operations.rs b/consensus/state_processing/src/per_block_processing/process_operations.rs
index f1de284fc8..422e0afe06 100644
--- a/consensus/state_processing/src/per_block_processing/process_operations.rs
+++ b/consensus/state_processing/src/per_block_processing/process_operations.rs
@@ -8,6 +8,7 @@ use crate::per_block_processing::builder::{
     convert_validator_index_to_builder_index, is_builder_index,
 };
 use crate::per_block_processing::errors::{BlockProcessingError, ExitInvalid, IntoWithIndex};
+use crate::per_block_processing::signature_sets::{exit_signature_set, get_pubkey_from_state};
 use crate::per_block_processing::verify_payload_attestation::verify_payload_attestation;
 use bls::{PublicKeyBytes, SignatureBytes};
 use ssz_types::FixedVector;
@@ -547,7 +548,8 @@ fn process_builder_voluntary_exit<E: EthSpec>(
     let builder_index =
         convert_validator_index_to_builder_index(signed_exit.message.validator_index);
 
-    let builder = state
+    // Verify builder is known
+    state
         .builders()?
         .get(builder_index as usize)
         .cloned()
@@ -570,22 +572,17 @@ fn process_builder_voluntary_exit<E: EthSpec>(
         ));
     }
 
-    // Verify signature (using EIP-7044 domain: capella_fork_version for Deneb+)
     if verify_signatures.is_true() {
-        let pubkey = builder.pubkey;
-        let domain = spec.compute_domain(
-            Domain::VoluntaryExit,
-            spec.capella_fork_version,
-            state.genesis_validators_root(),
+        verify!(
+            exit_signature_set(
+                state,
+                |i| get_pubkey_from_state(state, i),
+                signed_exit,
+                spec
+            )?
+            .verify(),
+            ExitInvalid::BadSignature
         );
-        let message = signed_exit.message.signing_root(domain);
-        // TODO(gloas): use builder pubkey cache once available
-        let bls_pubkey = pubkey
-            .decompress()
-            .map_err(|_| BlockOperationError::invalid(ExitInvalid::BadSignature))?;
-        if !signed_exit.signature.verify(&bls_pubkey, message) {
-            return Err(BlockOperationError::invalid(ExitInvalid::BadSignature));
-        }
     }
 
     // Initiate builder exit
diff --git a/consensus/state_processing/src/per_block_processing/signature_sets.rs b/consensus/state_processing/src/per_block_processing/signature_sets.rs
index 5c1767f227..0686c4d605 100644
--- a/consensus/state_processing/src/per_block_processing/signature_sets.rs
+++ b/consensus/state_processing/src/per_block_processing/signature_sets.rs
@@ -2,6 +2,7 @@
 //! validated individually, or alongside in others in a potentially cheaper bulk operation.
 //!
 //! This module exposes one function to extract each type of `SignatureSet` from a `BeaconBlock`.
+use super::builder::{convert_validator_index_to_builder_index, is_builder_index};
 use bls::{AggregateSignature, PublicKey, PublicKeyBytes, Signature, SignatureSet};
 use ssz::DecodeError;
 use std::borrow::Cow;
@@ -503,7 +504,7 @@ pub fn deposit_pubkey_signature_message(
 }
 
 /// Returns a signature set that is valid if the `SignedVoluntaryExit` was signed by the indicated
-/// validator.
+/// validator (or builder, in the case of a builder exit).
 pub fn exit_signature_set<'a, E, F>(
     state: &'a BeaconState<E>,
     get_pubkey: F,
@@ -515,7 +516,18 @@ where
     F: Fn(usize) -> Option<Cow<'a, PublicKey>>,
 {
     let exit = &signed_exit.message;
-    let proposer_index = exit.validator_index as usize;
+    let validator_index = exit.validator_index;
+
+    let is_builder_exit =
+        state.fork_name_unchecked().gloas_enabled() && is_builder_index(validator_index);
+
+    let pubkey = if is_builder_exit {
+        let builder_index = convert_validator_index_to_builder_index(validator_index);
+        get_builder_pubkey_from_state(state, builder_index)
+            .ok_or(Error::ValidatorUnknown(validator_index))?
+    } else {
+        get_pubkey(validator_index as usize).ok_or(Error::ValidatorUnknown(validator_index))?
+    };
 
     let domain = if state.fork_name_unchecked().deneb_enabled() {
         // EIP-7044
@@ -537,7 +549,7 @@ where
 
     Ok(SignatureSet::single_pubkey(
         &signed_exit.signature,
-        get_pubkey(proposer_index).ok_or(Error::ValidatorUnknown(proposer_index as u64))?,
+        pubkey,
         message,
     ))
 }