diff --git a/backend/pashub_fetcher/pashub_client.py b/backend/pashub_fetcher/pashub_client.py
index 11cf403c7..aadaed41f 100644
--- a/backend/pashub_fetcher/pashub_client.py
+++ b/backend/pashub_fetcher/pashub_client.py
@@ -192,7 +192,17 @@ class PashubClient:
 
         r.raise_for_status()
 
-        results = r.json().get("results", [])
+        payload: Dict[str, Any] = r.json()
+        results: List[Dict[str, Any]] = payload.get("results", [])
+        total: int = payload.get("totalItemCount", len(results))
+
+        if len(results) < total:
+            raise TruncatedEvidenceListError(
+                f"PasHub returned {len(results)} of {total} evidence files for job "
+                f"{job_id} - the response was truncated and the evidence set is "
+                f"incomplete. Increase _EVIDENCE_PAGE_SIZE in pashub_client.py "
+                f"above {total} and re-run."
+            )
 
         return [EvidenceFileData.from_api(item) for item in results]