diff --git a/evadb/functions/function_bootstrap_queries.py b/evadb/functions/function_bootstrap_queries.py
index f8186d4dd3..3b50085864 100644
--- a/evadb/functions/function_bootstrap_queries.py
+++ b/evadb/functions/function_bootstrap_queries.py
@@ -217,6 +217,7 @@
 Upper_function_query = """CREATE FUNCTION IF NOT EXISTS UPPER
         INPUT  (input ANYTYPE)
         OUTPUT (output NDARRAY STR(ANYDIM))
+        TYPE HelperFunction
         IMPL '{}/functions/helpers/upper.py';
         """.format(
     EvaDB_INSTALLATION_DIR
@@ -225,6 +226,7 @@
 Lower_function_query = """CREATE FUNCTION IF NOT EXISTS LOWER
         INPUT  (input ANYTYPE)
         OUTPUT (output NDARRAY STR(ANYDIM))
+        TYPE HelperFunction
         IMPL '{}/functions/helpers/lower.py';
         """.format(
     EvaDB_INSTALLATION_DIR
@@ -233,6 +235,7 @@
 Concat_function_query = """CREATE FUNCTION IF NOT EXISTS CONCAT
         INPUT  (input ANYTYPE)
         OUTPUT (output NDARRAY STR(ANYDIM))
+        TYPE HelperFunction
         IMPL '{}/functions/helpers/concat.py';
         """.format(
     EvaDB_INSTALLATION_DIR