diff --git a/dblayeroo.php b/dblayeroo.php
index 92c269c..11650ba 100644
--- a/dblayeroo.php
+++ b/dblayeroo.php
@@ -2340,10 +2340,17 @@ class dblayeroo
     // - If foreign keys, check if the value is set in the constraint
     foreach ($this->foreign as $field=>$params)
     {
+      // Do not test in update if the field is not provided as it was already
+      // recorded
+      if ($update === true && ! array_key_exists ($field, $values))
+        continue;
       if (! array_key_exists ($field, $values))
+      {
         $errors[$field] = sprintf (dgettext ("domframework",
           "The field '%s' must be test on foreign, but is not provided"),
           $field);
+        continue;
+      }
       if (! array_key_exists ($params[0], $this->setForeignObj))
         $this->DBException (sprintf (dgettext ("domframework",
          "No foreign object configured to test the foreign key for table '%s'"),