diff --git a/app/workers/fiber_graph_detect_worker.rb b/app/workers/fiber_graph_detect_worker.rb
index a3855f309..bdb3c8991 100644
--- a/app/workers/fiber_graph_detect_worker.rb
+++ b/app/workers/fiber_graph_detect_worker.rb
@@ -102,10 +102,10 @@ def build_channel_attributes(channel)
       node1: channel["node1"],
       node2: channel["node2"],
       created_timestamp: channel["created_timestamp"],
-      last_updated_timestamp_of_node1: channel["last_updated_timestamp_of_node1"].to_i(16),
-      last_updated_timestamp_of_node2: channel["last_updated_timestamp_of_node2"].to_i(16),
-      fee_rate_of_node1: channel["fee_rate_of_node1"].to_i(16),
-      fee_rate_of_node2: channel["fee_rate_of_node2"].to_i(16),
+      last_updated_timestamp_of_node1: channel["last_updated_timestamp_of_node1"]&.to_i(16),
+      last_updated_timestamp_of_node2: channel["last_updated_timestamp_of_node2"]&.to_i(16),
+      fee_rate_of_node1: channel["fee_rate_of_node1"]&.to_i(16),
+      fee_rate_of_node2: channel["fee_rate_of_node2"]&.to_i(16),
       capacity: channel["capacity"].to_i(16),
       chain_hash: channel["chain_hash"],
       open_transaction_id: open_transaction&.id,