diff --git a/libraries/schema/Pdf_Relation_Schema.class.php b/libraries/schema/Pdf_Relation_Schema.class.php
index 8bb4469d94..70df3797a6 100644
--- a/libraries/schema/Pdf_Relation_Schema.class.php
+++ b/libraries/schema/Pdf_Relation_Schema.class.php
@@ -366,7 +366,6 @@ class Table_Stats
     /**
      * Defines properties
      */
-    private $_tables = array();
     private $_tableName;
     private $_showInfo = false;
 
@@ -822,6 +821,7 @@ class PMA_Pdf_Relation_Schema extends PMA_Export_Relation_Schema
     /**
      * Defines properties
      */
+    private $_tables = array();
     private $_ff = PMA_PDF_FONT;
     private $_xMax = 0;
     private $_yMax = 0;
diff --git a/libraries/schema/Visio_Relation_Schema.class.php b/libraries/schema/Visio_Relation_Schema.class.php
index ed5662de0e..04f4d4c9ce 100644
--- a/libraries/schema/Visio_Relation_Schema.class.php
+++ b/libraries/schema/Visio_Relation_Schema.class.php
@@ -186,7 +186,6 @@ class Table_Stats
      * Defines properties
      */
 
-    private $_tables = array();
     private $_tableName;
     private $_showInfo = false;
 
@@ -528,6 +527,11 @@ class Relation_Stats
  */
 class PMA_Visio_Relation_Schema extends PMA_Export_Relation_Schema
 {
+    /**
+     * Class properties
+     */
+    private $_tables = array();
+
     /**
      * The "PMA_Visio_Relation_Schema" constructor
      *