diff --git a/lib/Cake/Test/Case/Utility/ValidationTest.php b/lib/Cake/Test/Case/Utility/ValidationTest.php
index 7126f6ecf..bb53c1406 100644
--- a/lib/Cake/Test/Case/Utility/ValidationTest.php
+++ b/lib/Cake/Test/Case/Utility/ValidationTest.php
@@ -2085,8 +2085,9 @@ class ValidationTest extends CakeTestCase {
 		$this->assertFalse(Validation::multiple(''));
 		$this->assertFalse(Validation::multiple(null));
 		$this->assertFalse(Validation::multiple(array()));
-		$this->assertFalse(Validation::multiple(array(0)));
-		$this->assertFalse(Validation::multiple(array('0')));
+		$this->assertTrue(Validation::multiple(array(0)));
+		$this->assertTrue(Validation::multiple(array('0')));
+		$this->assertFalse(Validation::multiple(array('')));
 
 		$this->assertTrue(Validation::multiple(array(0, 3, 4, 5), array('in' => range(0, 10))));
 		$this->assertFalse(Validation::multiple(array(0, 15, 20, 5), array('in' => range(0, 10))));
@@ -2094,8 +2095,9 @@ class ValidationTest extends CakeTestCase {
 		$this->assertFalse(Validation::multiple(array('boo', 'foo', 'bar'), array('in' => array('foo', 'bar', 'baz'))));
 		$this->assertFalse(Validation::multiple(array('foo', '1bar'), array('in' => range(0, 10))));
 
-		$this->assertTrue(Validation::multiple(array(0, 5, 10, 11), array('max' => 3)));
-		$this->assertFalse(Validation::multiple(array(0, 5, 10, 11, 55), array('max' => 3)));
+		$this->assertFalse(Validation::multiple(array(1, 5, 10, 11), array('max' => 3)));
+		$this->assertTrue(Validation::multiple(array(0, 5, 10, 11), array('max' => 4)));
+		$this->assertFalse(Validation::multiple(array(0, 5, 10, 11, 55), array('max' => 4)));
 		$this->assertTrue(Validation::multiple(array('foo', 'bar', 'baz'), array('max' => 3)));
 		$this->assertFalse(Validation::multiple(array('foo', 'bar', 'baz', 'squirrel'), array('max' => 3)));
 
@@ -2110,8 +2112,8 @@ class ValidationTest extends CakeTestCase {
 		$this->assertFalse(Validation::multiple(array(0, 5, 9, 8, 6, 2, 1), array('in' => range(0, 10), 'max' => 5)));
 		$this->assertFalse(Validation::multiple(array(0, 5, 9, 8, 11), array('in' => range(0, 10), 'max' => 5)));
 
-		$this->assertFalse(Validation::multiple(array(0, 5, 9), array('in' => range(0, 10), 'max' => 5, 'min' => 3)));
-		$this->assertFalse(Validation::multiple(array(0, 5, 9, 8, 6, 2, 1), array('in' => range(0, 10), 'max' => 5, 'min' => 2)));
+		$this->assertFalse(Validation::multiple(array(-1, 5, 9), array('in' => range(0, 10), 'max' => 5, 'min' => 3)));
+		$this->assertFalse(Validation::multiple(array(-1, 5, 9, 8, 6, 2, 1), array('in' => range(0, 10), 'max' => 5, 'min' => 2)));
 		$this->assertFalse(Validation::multiple(array(0, 5, 9, 8, 11), array('in' => range(0, 10), 'max' => 5, 'min' => 2)));
 
 		$this->assertFalse(Validation::multiple(array('2x', '3x'), array('in' => array(1, 2, 3, 4, 5))));
diff --git a/lib/Cake/Utility/Validation.php b/lib/Cake/Utility/Validation.php
index a2243694d..d5e0e4594 100644
--- a/lib/Cake/Utility/Validation.php
+++ b/lib/Cake/Utility/Validation.php
@@ -143,7 +143,7 @@ class Validation {
  * Returns true if $check is in the proper credit card format.
  *
  * @param string|array $check credit card number to validate
- * @param string|array $type 'all' may be passed as a sting, defaults to fast which checks format of most major credit 
+ * @param string|array $type 'all' may be passed as a sting, defaults to fast which checks format of most major credit
  * cards
  *    if an array is used only the values of the array are checked.
  *    Example: array('amex', 'bankcard', 'maestro')
@@ -594,7 +594,7 @@ class Validation {
 		$defaults = array('in' => null, 'max' => null, 'min' => null);
 		$options += $defaults;
 
-		$check = array_filter((array)$check);
+		$check = array_filter((array)$check, 'strlen');
 		if (empty($check)) {
 			return false;
 		}