diff --git a/packages/client/ui-conversation/src/client/conversation/location-index.ts b/packages/client/ui-conversation/src/client/conversation/location-index.ts
index 018fc92e7c..f7bac8eb1c 100644
--- a/packages/client/ui-conversation/src/client/conversation/location-index.ts
+++ b/packages/client/ui-conversation/src/client/conversation/location-index.ts
@@ -137,9 +137,7 @@ const SESSION_LOCATION = { kind: 'session' } as const
 const UNRESOLVED_LOCATION = { kind: 'unresolved' } as const
 
 function payloadCoordinates(event: SessionEventLike): Coordinates {
-  const payload: unknown = event.data
-  if (typeof payload !== 'object' || payload === null || Array.isArray(payload)) return {}
-  const data = payload as { turn?: unknown; step?: unknown }
+  const data = event.data as unknown as { turn?: unknown; step?: unknown }
   if (data.turn === null) return { session: true }
   const turn = Number.isSafeInteger(data.turn) && (data.turn as number) >= 0
     ? data.turn as number
diff --git a/packages/client/ui-deliverables/tests/produced-files.client.spec.tsx b/packages/client/ui-deliverables/tests/produced-files.client.spec.tsx
index 7db4fe3a27..9a01d5e3a1 100644
--- a/packages/client/ui-deliverables/tests/produced-files.client.spec.tsx
+++ b/packages/client/ui-deliverables/tests/produced-files.client.spec.tsx
@@ -600,7 +600,11 @@ describe('presented files', () => {
 })
 
 
-it.each([null, [], 'invalid', {}, { turn: '1', callId: 'bad', files: [] },
+it.each([null, [], 'invalid'])('declines non-object delivery data: %j', (data) => {
+  expect(deliverablesDefinition.match(at(1, 'deliverables/presented', data))).toBeNull()
+})
+
+it.each([{}, { turn: '1', callId: 'bad', files: [] },
   { turn: 1.5, callId: 'bad', files: [] }, { turn: 0, callId: 'bad', files: [] },
   { turn: 1, files: [] }, { turn: 1, callId: '', files: [] }, { turn: 1, callId: 'bad', files: null },
 ])('ignores malformed delivery data and keeps the existing produced row: %j', (data) => {