diff --git a/ChangeLog b/ChangeLog
index 9e720d21bb..99448be948 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,7 @@ phpMyAdmin - ChangeLog
 ======================
 
 4.3.2.0 (not yet released)
+- bug #4628 PHP error while exporting schema as PDF
 
 4.3.1.0 (2014-12-08)
 - bug #4609 'Show all' checkbox label is not clickable
diff --git a/libraries/plugins/schema/pdf/Pdf_Relation_Schema.class.php b/libraries/plugins/schema/pdf/Pdf_Relation_Schema.class.php
index be93be6864..82be0fa4fc 100644
--- a/libraries/plugins/schema/pdf/Pdf_Relation_Schema.class.php
+++ b/libraries/plugins/schema/pdf/Pdf_Relation_Schema.class.php
@@ -28,6 +28,7 @@ require_once 'libraries/plugins/schema/Export_Relation_Schema.class.php';
 require_once 'libraries/plugins/schema/pdf/RelationStatsPdf.class.php';
 require_once 'libraries/plugins/schema/pdf/TableStatsPdf.class.php';
 require_once 'libraries/PDF.class.php';
+require_once 'libraries/transformations.lib.php';
 
 /**
  * Extends the "TCPDF" class and helps