diff --git a/static/admin/config.yml b/static/admin/config.yml
index 86458b8..f61ffa6 100644
--- a/static/admin/config.yml
+++ b/static/admin/config.yml
@@ -25,7 +25,7 @@ collections:
       - {label: "Ημερομηνία Δημοσίευσης", name: "date", widget: "datetime", picker_utc: "false"}
       - {label: "Τίτλος κατηγορίας", name: "category_title", widget: "string", default: "Δράσεις"}
       - {label: "Ετικέτες", name: "tags", widget: "list", min: 1, default: ["Νέα"]}
-      - {label: "Συντόμευση", name: "aliases", widget: "list", min: 0, max: 1, widget: string}
+      - {label: "Συντόμευση", name: "aliases", widget: "list", min: 0, max: 1}
       - {label: "Περίληψη", name: "summary", required: false, widget: "string"}
       - {label: "Body", name: "body", widget: "markdown"}
   - name: "meetups" # Used in routes, e.g., /admin/collections/blog
@@ -45,7 +45,7 @@ collections:
       - {label: "Τίτλος κατηγορίας", name: "category_title", widget: "string", default: "Δράσεις"}
       - {label: "Ετικέτες κατηγορίας", name: "draseis", widget: "list", allow_add: false, default: [meetups]}
       - {label: "Ετικέτες", name: "tags", widget: "list", allow_add: false, default: ["Meetups"]}
-      - {label: "Συντόμευση", name: "aliases", widget: "list", min: 0, max: 1, widget: string}
+      - {label: "Συντόμευση", name: "aliases", widget: "list", min: 0, max: 1}
       - {label: "Περίληψη", name: "summary", required: false, widget: "string"}
       - {label: "Body", name: "body", widget: "markdown"}
   - name: "events" # Used in routes, e.g., /admin/collections/blog
@@ -65,6 +65,6 @@ collections:
       - {label: "Τίτλος κατηγορίας", name: "category_title", widget: "string", default: "Δράσεις"}
       - {label: "Ετικέτες κατηγορίας", name: "draseis", widget: "list", allow_add: false, default: [news,event]}
       - {label: "Ετικέτες", name: "tags", widget: "list", allow_add: false, default: ["Εκδηλώσεις","Νέα"]}
-      - {label: "Συντόμευση", name: "aliases", widget: "list", min: 0, max: 1, widget: string}
+      - {label: "Συντόμευση", name: "aliases", widget: "list", min: 0, max: 1}
       - {label: "Περίληψη", name: "summary", required: false, widget: "string"}
       - {label: "Body", name: "body", widget: "markdown"}