diff --git a/src/sql/parser/gen_type_name.sh b/src/sql/parser/gen_type_name.sh
index 0cdc9935c08a33e1535e147d651858daa1780568..894d4cb3dca13b6172c8ee6b9e6043b3d6ab77f8 100755
--- a/src/sql/parser/gen_type_name.sh
+++ b/src/sql/parser/gen_type_name.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 echo -e '#include "objit/common/ob_item_type.h"'
 echo -e "const char* get_type_name(int type)\n{"
 echo -e "\tswitch(type){"