diff --git a/process_queue b/process_queue
index 85c17b2..1896e2a 100644
--- a/process_queue
+++ b/process_queue
@@ -76,6 +76,7 @@ class DiskFullPredictor:
                 future_growth = current_usable_bytes  / current_used_bytes
                 tuf = math.log(future_growth) / math.log(historic_growth) * (now - lts.data[first_i][0])
                 tuf = max(tuf, now - lts.data[first_i][0])
+                tuf = min(tuf, 1E9)
         desc = {**lts.description,
              "measure": "time_until_disk_full",
              "node": node,