diff --git a/Tests/dblayerComplet.php b/Tests/dblayerComplet.php
index 8a1436a..49e8801 100644
--- a/Tests/dblayerComplet.php
+++ b/Tests/dblayerComplet.php
@@ -186,4 +186,22 @@ class test_dblayer_{ENGINE} extends PHPUnit_Framework_TestCase
                                         "with space"=>"WITH SPACE")), $res);
   }
 
+  public function test_update3 ()
+  {
+    $dbconfig = $this->confs["{ENGINE}"];
+    $db = new dblayer ($dbconfig["dsn"], $dbconfig["username"],
+                       $dbconfig["password"], $dbconfig["driver_options"]);
+    $db->table = "grouped";
+    $db->fields = array ("group"=>array ("varchar", "255", "not null"),
+                         "object"=>array ("varchar", "255", "not null"),
+                         "where"=>array ("varchar", "255", "not null"),
+                         "with space"=>array ("varchar", "255", "not null"));
+    $db->unique = array ("group");
+    $db->primary = "group";
+    // Update primary key with primary key in unique
+    $res = $db->update ("NEW GROUP", array ("group"=>"NEW GROUP",
+                                           "object"=>"%éàoppp",
+                                           "with space"=>"WITH SPACE"));
+    $this->assertSame (1, $res);
+  }
 }