diff --git a/redisvl/index/index.py b/redisvl/index/index.py
index 4d7a871b..6b6fefc7 100644
--- a/redisvl/index/index.py
+++ b/redisvl/index/index.py
@@ -833,6 +833,13 @@ def drop_keys(self, keys: str | list[str]) -> int:
             int: Count of records deleted from Redis.
         """
         if isinstance(keys, list):
+            # Check for cluster compatibility
+            if isinstance(
+                self._redis_client, RedisCluster
+            ) and not _keys_share_hash_tag(keys):
+                raise ValueError(
+                    "All keys must share a hash tag when using Redis Cluster."
+                )
             return self._redis_client.delete(*keys)  # type: ignore
         else:
             return self._redis_client.delete(keys)  # type: ignore