diff --git a/src/ethereum_analysis/eth_graph.ml b/src/ethereum_analysis/eth_graph.ml
index c573d9a38534ccb2a98cb4672b72ea2cec371050..ee4fff83a19b3ee065793801466fab6da8cb8fed 100644
--- a/src/ethereum_analysis/eth_graph.ml
+++ b/src/ethereum_analysis/eth_graph.ml
@@ -969,12 +969,15 @@ let rec cft_trees_compatible_for_merge to_ tree1 tree2 =
       | false, false ->
         if
           address_of_eth_address c1.resume.tc_destination
-          = address_of_eth_address t2.ttn_from
+          = address_of_eth_address t2.ttn_from && 
+          Option.is_some @@ List.assoc_opt (address_of_eth_address t2.ttn_asset:>string) c1.resume.tc_amount1
         then
           Some (Cftt_chain c1, Cftt_transfer t2, `chain)
         else if
           address_of_eth_address t2.ttn_to
           = address_of_eth_address c1.resume.tc_origin
+          &&
+          address_of_eth_address t2.ttn_asset = address_of_eth_address c1.resume.tc_first_transfer.tka_asset
         then
           Some (Cftt_transfer t2, Cftt_chain c1, `chain)
         else