diff --git a/src/olympia/search/management/commands/reindex.py b/src/olympia/search/management/commands/reindex.py
index 951bbffa1675..2a9a3ec49f82 100644
--- a/src/olympia/search/management/commands/reindex.py
+++ b/src/olympia/search/management/commands/reindex.py
@@ -216,7 +216,7 @@ def add_alias_action(action, index, alias):
 
         # If old_index is None that could mean it's a full index.
         # In that case we want to continue index in it.
-        if ES.indices.exists(index=alias):
+        if ES.indices.exists_alias(name=alias):
             old_index = alias
 
         # Main chain for this alias that: