diff --git a/libraries/schema/Eps_Relation_Schema.class.php b/libraries/schema/Eps_Relation_Schema.class.php
index f0480f9e22..b7a8a2c48f 100644
--- a/libraries/schema/Eps_Relation_Schema.class.php
+++ b/libraries/schema/Eps_Relation_Schema.class.php
@@ -695,10 +695,10 @@ class PMA_Eps_Relation_Schema extends PMA_Export_Relation_Schema
         global $eps,$db;
 
         $this->setPageNumber($_POST['pdf_page_number']);
-        $this->setShowColor(isset($_POST['show_color']));
-        $this->setShowKeys(isset($_POST['show_keys']));
-        $this->setTableDimension(isset($_POST['show_table_dimension']));
-        $this->setAllTablesSameWidth(isset($_POST['all_tables_same_width']));
+        $this->setShowColor($_POST['show_color']);
+        $this->setShowKeys($_POST['show_keys']);
+        $this->setTableDimension($_POST['show_table_dimension']);
+        $this->setAllTablesSameWidth($_POST['all_tables_same_width']);
         $this->setOrientation($_POST['orientation']);
         $this->setExportType($_POST['export_type']);
 
diff --git a/libraries/schema/Pdf_Relation_Schema.class.php b/libraries/schema/Pdf_Relation_Schema.class.php
index 97d9c99f54..9adb5e5229 100644
--- a/libraries/schema/Pdf_Relation_Schema.class.php
+++ b/libraries/schema/Pdf_Relation_Schema.class.php
@@ -828,11 +828,11 @@ class PMA_Pdf_Relation_Schema extends PMA_Export_Relation_Schema
         global $pdf, $db;
 
         $this->setPageNumber($_POST['pdf_page_number']);
-        $this->setShowGrid(isset($_POST['show_grid']));
-        $this->setShowColor(isset($_POST['show_color']));
-        $this->setShowKeys(isset($_POST['show_keys']));
-        $this->setTableDimension(isset($_POST['show_table_dimension']));
-        $this->setAllTablesSameWidth(isset($_POST['all_tables_same_width']));
+        $this->setShowGrid($_POST['show_grid']);
+        $this->setShowColor($_POST['show_color']);
+        $this->setShowKeys($_POST['show_keys']);
+        $this->setTableDimension($_POST['show_table_dimension']);
+        $this->setAllTablesSameWidth($_POST['all_tables_same_width']);
         $this->setWithDataDictionary($_POST['with_doc']);
         $this->setOrientation($_POST['orientation']);
         $this->setPaper($_POST['paper']);
diff --git a/libraries/schema/Svg_Relation_Schema.class.php b/libraries/schema/Svg_Relation_Schema.class.php
index 4cb0b9f19a..a836cb6063 100644
--- a/libraries/schema/Svg_Relation_Schema.class.php
+++ b/libraries/schema/Svg_Relation_Schema.class.php
@@ -667,10 +667,10 @@ class PMA_Svg_Relation_Schema extends PMA_Export_Relation_Schema
         global $svg,$db;
 
         $this->setPageNumber($_POST['pdf_page_number']);
-        $this->setShowColor(isset($_POST['show_color']));
-        $this->setShowKeys(isset($_POST['show_keys']));
-        $this->setTableDimension(isset($_POST['show_table_dimension']));
-        $this->setAllTablesSameWidth(isset($_POST['all_tables_same_width']));
+        $this->setShowColor($_POST['show_color']);
+        $this->setShowKeys($_POST['show_keys']);
+        $this->setTableDimension($_POST['show_table_dimension']);
+        $this->setAllTablesSameWidth($_POST['all_tables_same_width']);
         $this->setExportType($_POST['export_type']);
 
         $svg = new PMA_SVG();