diff --git a/node/impl/full/eth.go b/node/impl/full/eth.go
index a26241cd7..2f1b30fad 100644
--- a/node/impl/full/eth.go
+++ b/node/impl/full/eth.go
@@ -1209,7 +1209,7 @@ func (e *EthEvent) installEthFilterSpec(ctx context.Context, filterSpec *ethtype
 			return nil, xerrors.Errorf("must not specify block hash and from/to block")
 		}
 
-		// TODO: derive a tipset hash from eth hash - might need to push this down into the EventFilterManager
+		tipsetCid = filterSpec.BlockHash.ToCid()
 	} else {
 		if filterSpec.FromBlock == nil || *filterSpec.FromBlock == "latest" {
 			ts := e.Chain.GetHeaviestTipSet()