diff --git a/test/conf/cassandra.yaml b/test/conf/cassandra.yaml
index a9cc7fcf7c..0f7ebb983b 100644
--- a/test/conf/cassandra.yaml
+++ b/test/conf/cassandra.yaml
@@ -126,4 +126,5 @@ memtable:
             class_name: TrieMemtable
 # Note: keep the memtable configuration at the end of the file, so that the default mapping can be changed without
 # duplicating the whole section above.
-# ===== DO NOT PUT ANYTHING AFTER MEMTABLE CONFIG =====
\ No newline at end of file
+# ===== DO NOT PUT ANYTHING AFTER MEMTABLE CONFIG AND PRESERVE A NEWLINE AT THE END (other parts of test yamls are appended there) =====
+