diff --git a/src/Valitron/Validator.php b/src/Valitron/Validator.php
index e6b7e16..08b6e58 100644
--- a/src/Valitron/Validator.php
+++ b/src/Valitron/Validator.php
@@ -992,7 +992,7 @@ class Validator
                 $i = 1;
                 foreach ($params as $k => $v) {
                     $tag = '{field'. $i .'}';
-                    $label = isset($params[$k]) && !is_array($params[$k]) && isset($this->_labels[$params[$k]]) ? $this->_labels[$params[$k]] : $tag;
+                    $label = isset($params[$k]) && (is_numeric($params[$k]) || is_string($params[$k])) && isset($this->_labels[$params[$k]]) ? $this->_labels[$params[$k]] : $tag;
                     $msg = str_replace($tag, $label, $msg);
                     $i++;
                 }
diff --git a/tests/Valitron/ValidateTest.php b/tests/Valitron/ValidateTest.php
index 16bed82..385190c 100644
--- a/tests/Valitron/ValidateTest.php
+++ b/tests/Valitron/ValidateTest.php
@@ -578,6 +578,32 @@ class ValidateTest extends BaseTestCase
         $this->assertTrue($v->validate());
     }
 
+    public function testDateWarningsWithObjectParams()
+    {
+        $v = new Validator(array('startDate' => '2013-01-27', 'endDate' => '2013-05-08'));
+        $v->rule(
+            'date',
+            array(
+                'startDate',
+                'endDate'
+            )
+        );
+
+        $v->rule(
+            'dateBefore',
+            'endDate',
+             new DateTime('2013-04-08')
+        )->label('End date')->message('{field} must be before the end of the fiscal year, %s.');
+
+        $v->rule(
+            'dateAfter',
+            'startDate',
+            new DateTime('2013-02-17')
+        )->label('Start date')->message('{field} must be after the beginning of the fiscal year, %s.');
+
+        $this->assertFalse($v->validate());
+    }
+
     public function testDateBeforeInvalid()
     {
         $v = new Validator(array('date' => '2013-01-27'));