diff --git a/src/Provider/PdfOrientationProviderInterface.php b/src/Provider/PdfOrientationProviderInterface.php
index e6548db1..d0a25256 100644
--- a/src/Provider/PdfOrientationProviderInterface.php
+++ b/src/Provider/PdfOrientationProviderInterface.php
@@ -7,6 +7,7 @@
 interface PdfOrientationProviderInterface
 {
     public const ORIENTATION_PORTRAIT = 'Portrait';
+
     public const ORIENTATION_LANDSCAPE = 'Landscape';
 
     public function getAvailableOrientations(): array;
diff --git a/src/Provider/PdfPageSizeProviderInterface.php b/src/Provider/PdfPageSizeProviderInterface.php
index f8e787ee..485147e0 100644
--- a/src/Provider/PdfPageSizeProviderInterface.php
+++ b/src/Provider/PdfPageSizeProviderInterface.php
@@ -7,10 +7,15 @@
 interface PdfPageSizeProviderInterface
 {
     public const FORMAT_A3 = 'A3';
+
     public const FORMAT_A4 = 'A4';
+
     public const FORMAT_A5 = 'A5';
+
     public const FORMAT_A6 = 'A6';
+
     public const FORMAT_A7 = 'A7';
+
     public const FORMAT_A8 = 'A8';
 
     public function getAvailablePageSizes(): array;