diff --git a/sqlglot/dialects/e6.py b/sqlglot/dialects/e6.py
index 0888febfaa..f3c420e8c9 100644
--- a/sqlglot/dialects/e6.py
+++ b/sqlglot/dialects/e6.py
@@ -3140,6 +3140,7 @@ def create_lpad_component(func_name: str):
             "grouping",
             "having",
             "in",
+            "index",
             "inner",
             "int",
             "integer",