diff --git a/web/app/models/DB.php b/web/app/models/DB.php
index fadba9b..57fea56 100644
--- a/web/app/models/DB.php
+++ b/web/app/models/DB.php
@@ -124,7 +124,7 @@ class DB {
     	return "{$field} as {$name}";
     }
     public static function value_as($value, $name) {
-    	return DB::value($value)."as {$name}";
+    	return DB::value($value)." as {$name}";
     }
 
     public static function if_func($conds, $val1, $val2) {