diff --git a/src/lib/Hydra/Schema/Projects.pm b/src/lib/Hydra/Schema/Projects.pm
index 697f1aee..f8828428 100644
--- a/src/lib/Hydra/Schema/Projects.pm
+++ b/src/lib/Hydra/Schema/Projects.pm
@@ -252,10 +252,12 @@ my %hint = (
         "displayname",
         "description",
         "homepage",
-        "enabled",
-        "hidden",
         "owner"
     ],
+    boolean_columns => [
+      "enabled",
+      "hidden"
+    ],
     relations => {
         jobsets => "name"
     }