diff --git a/addons/web/static/src/js/views/form_common.js b/addons/web/static/src/js/views/form_common.js
index 2ac0e0a024f..638327c8a3a 100644
--- a/addons/web/static/src/js/views/form_common.js
+++ b/addons/web/static/src/js/views/form_common.js
@@ -174,8 +174,8 @@ var CompletionFieldMixin = {
     init: function() {
         this.limit = 7;
         this.orderer = new utils.DropMisordered();
-        this.can_create = this.node.attrs.can_create || true;
-        this.can_write = this.node.attrs.can_write || true;
+        this.can_create = this.node.attrs.can_create == "false" ? false : true;
+        this.can_write = this.node.attrs.can_write == "false" ? false : true;
     },
     /**
      * Call this method to search using a string.