diff --git a/eth2/state_processing/src/per_block_processing/is_valid_indexed_attestation.rs b/eth2/state_processing/src/per_block_processing/is_valid_indexed_attestation.rs
index 54a48d7b7..34802ef02 100644
--- a/eth2/state_processing/src/per_block_processing/is_valid_indexed_attestation.rs
+++ b/eth2/state_processing/src/per_block_processing/is_valid_indexed_attestation.rs
@@ -55,6 +55,15 @@ pub fn is_valid_indexed_attestation<T: EthSpec>(
     check_sorted(&bit_0_indices)?;
     check_sorted(&bit_1_indices)?;
 
+    dbg!(indexed_attestation_signature_set(
+        state,
+        &indexed_attestation.signature,
+        &indexed_attestation,
+        spec
+    )?);
+    dbg!(&bit_0_indices);
+    dbg!(&bit_1_indices);
+
     if verify_signatures.is_true() {
         verify!(
             indexed_attestation_signature_set(
diff --git a/eth2/utils/bls/src/signature_set.rs b/eth2/utils/bls/src/signature_set.rs
index 4b6065f9f..df1636f1d 100644
--- a/eth2/utils/bls/src/signature_set.rs
+++ b/eth2/utils/bls/src/signature_set.rs
@@ -7,7 +7,7 @@ use milagro_bls::AggregateSignature as RawAggregateSignature;
 type Message = Vec<u8>;
 type Domain = u64;
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct SignedMessage<'a> {
     signing_keys: Vec<&'a G1Point>,
     message: Message,
@@ -25,7 +25,7 @@ impl<'a> SignedMessage<'a> {
     }
 }
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct SignatureSet<'a> {
     pub signature: &'a G2Point,
     signed_messages: Vec<SignedMessage<'a>>,