diff --git a/src/Deepzoom.php b/src/Deepzoom.php
index 340fb6d..1977f6a 100644
--- a/src/Deepzoom.php
+++ b/src/Deepzoom.php
@@ -233,7 +233,7 @@ public function createJSONP($filename, $height, $width)
         xmlns: 'http://schemas.microsoft.com/deepzoom/2008',
         Format: '$this->tileFormat',
         Overlap: $this->tileOverlap,
-        TileSize: $this->tileSize
+        TileSize: $this->tileSize,
         Size: {
             Width: $width,
             Height: $height