diff --git a/.changeset/violet-comics-reflect.md b/.changeset/violet-comics-reflect.md
new file mode 100644
index 0000000000000..8f52dda5c2b98
--- /dev/null
+++ b/.changeset/violet-comics-reflect.md
@@ -0,0 +1,5 @@
+---
+'@eth-optimism/data-transport-layer': patch
+---
+
+Prevent access of null value in L1 transaction deserialization
diff --git a/packages/data-transport-layer/src/services/l1-ingestion/handlers/sequencer-batch-appended.ts b/packages/data-transport-layer/src/services/l1-ingestion/handlers/sequencer-batch-appended.ts
index 6524bf4ae3b81..c829f755cf8ea 100644
--- a/packages/data-transport-layer/src/services/l1-ingestion/handlers/sequencer-batch-appended.ts
+++ b/packages/data-transport-layer/src/services/l1-ingestion/handlers/sequencer-batch-appended.ts
@@ -121,7 +121,7 @@ export const handleEventsSequencerBatchAppended: EventHandlerSet<
           data: toHexString(sequencerTransaction),
           queueOrigin: 'sequencer',
           type,
-          value: decoded.value,
+          value: decoded ? decoded.value : '0x0',
           queueIndex: null,
           decoded,
           confirmed: true,