diff --git a/op/op.AddDocument.php b/op/op.AddDocument.php
index 4c32f5dd1..a9ed40be1 100644
--- a/op/op.AddDocument.php
+++ b/op/op.AddDocument.php
@@ -91,6 +91,7 @@ $reqversion = (int)$_POST["reqversion"];
 if ($reqversion<1) $reqversion=1;
 
 $sequence = $_POST["sequence"];
+$sequence = str_replace(',', '.', $_POST["sequence"]);
 if (!is_numeric($sequence)) {
 	UI::exitError(getMLText("folder_title", array("foldername" => $folder->getName())),getMLText("invalid_sequence"));
 }
diff --git a/op/op.AddSubFolder.php b/op/op.AddSubFolder.php
index a6b5c5441..70005a053 100644
--- a/op/op.AddSubFolder.php
+++ b/op/op.AddSubFolder.php
@@ -49,6 +49,7 @@ if ($folder->getAccessMode($user) < M_READWRITE) {
 }
 
 $sequence = $_POST["sequence"];
+$sequence = str_replace(',', '.', $_POST["sequence"]);
 
 if (!is_numeric($sequence)) {
 	UI::exitError(getMLText("folder_title", array("foldername" => $folder->getName())),getMLText("invalid_sequence"));
diff --git a/op/op.EditDocument.php b/op/op.EditDocument.php
index e572f201b..a610a37fb 100644
--- a/op/op.EditDocument.php
+++ b/op/op.EditDocument.php
@@ -55,6 +55,7 @@ if(isset($_POST['categoryidform1'])) {
 	$categories = array();
 }
 $sequence = $_POST["sequence"];
+$sequence = str_replace(',', '.', $_POST["sequence"]);
 if (!is_numeric($sequence)) {
 	$sequence="keep";
 }
diff --git a/op/op.EditFolder.php b/op/op.EditFolder.php
index eaf40df4c..7f9e01f38 100644
--- a/op/op.EditFolder.php
+++ b/op/op.EditFolder.php
@@ -46,7 +46,7 @@ if ($folder->getAccessMode($user) < M_READWRITE) {
 $name    = $_POST["name"];
 $comment = $_POST["comment"];
 if(isset($_POST["sequence"])) {
-	$sequence = $_POST["sequence"];
+	$sequence = str_replace(',', '.', $_POST["sequence"]);
 	if (!is_numeric($sequence)) {
 		$sequence = "keep";
 	}