diff --git a/specs/core/0_beacon-chain.md b/specs/core/0_beacon-chain.md
index dcd834281..d762ddc37 100644
--- a/specs/core/0_beacon-chain.md
+++ b/specs/core/0_beacon-chain.md
@@ -920,7 +920,7 @@ def get_crosslink_committee(state: BeaconState, epoch: Epoch, shard: Shard) -> L
     end_validator_index = (len(active_indices) * (committee_index + 1)) // committee_count
     return [
         active_indices[get_shuffled_index(i, len(active_indices), generate_seed(state, epoch))]
-        for i in range(start_index, end_index)
+        for i in range(start_validator_index, end_validator_index)
     ]
 ```