diff --git a/Algorithm/Maze/MazeGenerator.php b/Algorithm/Maze/MazeGenerator.php
index 40f02f7db..af8a1bc36 100644
--- a/Algorithm/Maze/MazeGenerator.php
+++ b/Algorithm/Maze/MazeGenerator.php
@@ -143,18 +143,21 @@ class MazeGenerator
      *
      * @param array $maze Maze to render
      *
-     * @return void
+     * @return string
      *
      * @since 1.0.0
      */
-    public static function render(array $maze) : void
+    public static function render(array $maze) : string
     {
+        $rendered = '';
         foreach ($maze as $y => $row) {
             foreach ($row as $x => $column) {
-                echo $column;
+                $rendered .= $column;
             }
 
-            echo "\n";
+            $rendered .= "\n";
         }
+
+        return $rendered;
     }
 }
diff --git a/tests/Algorithm/Maze/MazeGeneratorTest.php b/tests/Algorithm/Maze/MazeGeneratorTest.php
index 776f31f56..5bf5e3093 100644
--- a/tests/Algorithm/Maze/MazeGeneratorTest.php
+++ b/tests/Algorithm/Maze/MazeGeneratorTest.php
@@ -66,11 +66,7 @@ class MazeGeneratorTest extends \PHPUnit\Framework\TestCase
      */
     public function testMazeRender() : void
     {
-        \ob_start();
-        MazeGenerator::render(MazeGenerator::random(10, 7));
-        $ob = \ob_get_clean();
-        \ob_clean();
-
+        $ob   = MazeGenerator::render(MazeGenerator::random(10, 7));
         $maze = \explode("\n", $ob);
 
         // correct top