diff --git a/Tests/Unit/EnumerableTest.php b/Tests/Unit/EnumerableTest.php
index ff64ed3..de1b89b 100644
--- a/Tests/Unit/EnumerableTest.php
+++ b/Tests/Unit/EnumerableTest.php
@@ -2533,6 +2533,9 @@ function testToString ()
         $this->assertEquals(
             '123',
             E::from([ 1, 'a' => 2, 3 ])->toString());
+        $this->assertEquals(
+            '123',
+            E::from([ [ 0, 1 ], [ 0, 2 ], [ 1, 3 ] ])->select('$v[1]', '$v[0]')->toString());
 
         // toString (separator)
         $this->assertEquals(
@@ -2544,6 +2547,9 @@ function testToString ()
         $this->assertEquals(
             '1, 2, 3',
             E::from([ 1, 'a' => 2, 3 ])->toString(', '));
+        $this->assertEquals(
+            '1, 2, 3',
+            E::from([ [ 0, 1 ], [ 0, 2 ], [ 1, 3 ] ])->select('$v[1]', '$v[0]')->toString(', '));
 
         // toString (separator, selector)
         $this->assertEquals(
@@ -2555,6 +2561,9 @@ function testToString ()
         $this->assertEquals(
             '0=1, a=2, 1=3',
             E::from([ 1, 'a' => 2, 3 ])->toString(', ', '"$k=$v"'));
+        $this->assertEquals(
+            '0=1, 0=2, 1=3',
+            E::from([ [ 0, 1 ], [ 0, 2 ], [ 1, 3 ] ])->select('$v[1]', '$v[0]')->toString(', ', '"$k=$v"'));
     }
 
     #endregion
diff --git a/YaLinqo/Enumerable.php b/YaLinqo/Enumerable.php
index 119f348..4c31d20 100644
--- a/YaLinqo/Enumerable.php
+++ b/YaLinqo/Enumerable.php
@@ -1021,7 +1021,7 @@ public function toObject ($propertySelector = null, $valueSelector = null)
     public function toString ($separator = '', $valueSelector = null)
     {
         $valueSelector = Utils::createLambda($valueSelector, 'v,k', false);
-        $array = $valueSelector ? $this->select($valueSelector)->toArray() : $this->toArray();
+        $array = $valueSelector ? $this->select($valueSelector)->toList() : $this->toList();
         return implode($separator, $array);
     }