diff --git a/tools/db_crashtest.py b/tools/db_crashtest.py
index a62a7b685..73a46b424 100644
--- a/tools/db_crashtest.py
+++ b/tools/db_crashtest.py
@@ -170,6 +170,10 @@ def finalize_and_sanitize(src_params):
         # with open_files = -1
         dest_params["compaction_ttl"] = 0
         dest_params["periodic_compaction_seconds"] = 0
+    if dest_params.get("compaction_style", 0) == 2:
+        # Disable compaction TTL in FIFO compaction, because right
+        # now assertion failures are triggered.
+        dest_params["compaction_ttl"] = 0
     return dest_params