diff --git a/eth2/state_processing/src/per_block_processing.rs b/eth2/state_processing/src/per_block_processing.rs
index df35e8c7e..f74af9fb0 100644
--- a/eth2/state_processing/src/per_block_processing.rs
+++ b/eth2/state_processing/src/per_block_processing.rs
@@ -29,9 +29,7 @@ mod verify_proposer_slashing;
 mod verify_transfer;
 
 // Set to `true` to check the merkle proof that a deposit is in the eth1 deposit root.
-//
-// Presently disabled to make testing easier.
-const VERIFY_DEPOSIT_MERKLE_PROOFS: bool = false;
+const VERIFY_DEPOSIT_MERKLE_PROOFS: bool = true;
 
 /// Updates the state for a new block, whilst validating that the block is valid.
 ///