diff --git a/libraries/tbl_partition_definition.inc.php b/libraries/tbl_partition_definition.inc.php
index 1ef4a9db6c..4663b2f069 100644
--- a/libraries/tbl_partition_definition.inc.php
+++ b/libraries/tbl_partition_definition.inc.php
@@ -18,21 +18,21 @@ if (!isset($partitionDetails)) {
         'subpartition_by', 'subpartition_expr',
     );
     foreach ($partitionParams as $partitionParam) {
-        $partitionDetails[$partitionParam] = isset($_REQUEST[$partitionParam])
-            ? $_REQUEST[$partitionParam] : '';
+        $partitionDetails[$partitionParam] = isset($_POST[$partitionParam])
+            ? $_POST[$partitionParam] : '';
     }
 
-    if (Core::isValid($_REQUEST['partition_count'], 'numeric')) {
+    if (Core::isValid($_POST['partition_count'], 'numeric')) {
         // MySQL's limit is 8192, so do not allow more
-        $partition_count = min(intval($_REQUEST['partition_count']), 8192);
+        $partition_count = min(intval($_POST['partition_count']), 8192);
     } else {
         $partition_count = 0;
     }
     $partitionDetails['partition_count']
         = ($partition_count === 0) ? '' : $partition_count;
-    if (Core::isValid($_REQUEST['subpartition_count'], 'numeric')) {
+    if (Core::isValid($_POST['subpartition_count'], 'numeric')) {
         // MySQL's limit is 8192, so do not allow more
-        $subpartition_count = min(intval($_REQUEST['subpartition_count']), 8192);
+        $subpartition_count = min(intval($_POST['subpartition_count']), 8192);
     } else {
         $subpartition_count = 0;
     }
@@ -41,23 +41,23 @@ if (!isset($partitionDetails)) {
 
     // Only LIST and RANGE type parameters allow subpartitioning
     $partitionDetails['can_have_subpartitions'] = $partition_count > 1
-        && isset($_REQUEST['partition_by'])
-        && ($_REQUEST['partition_by'] == 'RANGE'
-        || $_REQUEST['partition_by'] == 'RANGE COLUMNS'
-        || $_REQUEST['partition_by'] == 'LIST'
-        || $_REQUEST['partition_by'] == 'LIST COLUMNS');
+        && isset($_POST['partition_by'])
+        && ($_POST['partition_by'] == 'RANGE'
+        || $_POST['partition_by'] == 'RANGE COLUMNS'
+        || $_POST['partition_by'] == 'LIST'
+        || $_POST['partition_by'] == 'LIST COLUMNS');
 
     // Values are specified only for LIST and RANGE type partitions
-    $partitionDetails['value_enabled'] = isset($_REQUEST['partition_by'])
-        && ($_REQUEST['partition_by'] == 'RANGE'
-        || $_REQUEST['partition_by'] == 'RANGE COLUMNS'
-        || $_REQUEST['partition_by'] == 'LIST'
-        || $_REQUEST['partition_by'] == 'LIST COLUMNS');
+    $partitionDetails['value_enabled'] = isset($_POST['partition_by'])
+        && ($_POST['partition_by'] == 'RANGE'
+        || $_POST['partition_by'] == 'RANGE COLUMNS'
+        || $_POST['partition_by'] == 'LIST'
+        || $_POST['partition_by'] == 'LIST COLUMNS');
 
     // Has partitions
     if ($partition_count > 1) {
-        $partitions = isset($_REQUEST['partitions'])
-            ? $_REQUEST['partitions']
+        $partitions = isset($_POST['partitions'])
+            ? $_POST['partitions']
             : array();
 
         // Remove details of the additional partitions