diff --git a/apps/files/js/file-upload.js b/apps/files/js/file-upload.js
index 970aad1f978..aeb2da90d5f 100644
--- a/apps/files/js/file-upload.js
+++ b/apps/files/js/file-upload.js
@@ -46,6 +46,15 @@ $(document).ready(function() {
 				$('#uploadprogresswrapper input.stop').show();
 			}
 		},
+		submit: function(e, data) {
+			if ( ! data.formData ) {
+				// noone set update parameters, we set the minimum
+				data.formData = {
+					requesttoken: oc_requesttoken,
+							 dir: $('#dir').val()
+				};
+			}
+		},
 		/**
 		 * called after the first add, does NOT have the data param
 		 * @param e
@@ -141,15 +150,8 @@ $(document).ready(function() {
 			$('#uploadprogressbar').fadeOut();
 		}
 	};
-	var file_upload_handler = function() {
-		$('#file_upload_start').fileupload(file_upload_param);
-	};
-
-
-
-	if ( document.getElementById('data-upload-form') ) {
-		$(file_upload_handler);
-	}
+	$('#file_upload_start').fileupload(file_upload_param);
+	
 	$.assocArraySize = function(obj) {
 		// http://stackoverflow.com/a/6700/11236
 		var size = 0, key;
diff --git a/apps/files/templates/index.php b/apps/files/templates/index.php
index 09e351d4ea8..bd991c3fcb0 100644
--- a/apps/files/templates/index.php
+++ b/apps/files/templates/index.php
@@ -15,26 +15,18 @@
 			</div>
 			<div id="upload" class="button"
 				 title="<?php p($l->t('Upload') . ' max. '.$_['uploadMaxHumanFilesize']) ?>">
-				<form data-upload-id='1'
-					  id="data-upload-form"
-					  class="file_upload_form"
-					  action="<?php print_unescaped(OCP\Util::linkTo('files', 'ajax/upload.php')); ?>"
-					  method="post"
-					  enctype="multipart/form-data"
-					  target="file_upload_target_1">
 					<?php if($_['uploadMaxFilesize'] >= 0):?>
 					<input type="hidden" name="MAX_FILE_SIZE" id="max_upload"
 						   value="<?php p($_['uploadMaxFilesize']) ?>">
 					<?php endif;?>
 					<!-- Send the requesttoken, this is needed for older IE versions
 						 because they don't send the CSRF token via HTTP header in this case -->
-					<input type="hidden" name="requesttoken" value="<?php p($_['requesttoken']) ?>" id="requesttoken">
 					<input type="hidden" class="max_human_file_size"
 						   value="(max <?php p($_['uploadMaxHumanFilesize']); ?>)">
 					<input type="hidden" name="dir" value="<?php p($_['dir']) ?>" id="dir">
-					<input type="file" id="file_upload_start" name='files[]'/>
+					<input type="file" id="file_upload_start" name='files[]'
+						   data-url="<?php print_unescaped(OCP\Util::linkTo('files', 'ajax/upload.php')); ?>" />
 					<a href="#" class="svg"></a>
-				</form>
 			</div>
 			<?php if ($_['trash'] ): ?>
 				<div id="trash" class="button" <?php $_['trashEmpty'] ? p('disabled') : '' ?>>
diff --git a/apps/files_sharing/js/public.js b/apps/files_sharing/js/public.js
index 357c6fdf540..acabc9a5c10 100644
--- a/apps/files_sharing/js/public.js
+++ b/apps/files_sharing/js/public.js
@@ -7,8 +7,6 @@ function fileDownloadPath(dir, file) {
 	return url;
 }
 
-var form_data;
-
 $(document).ready(function() {
 
 	$('#data-upload-form').tipsy({gravity:'ne', fade:true});
@@ -50,19 +48,20 @@ $(document).ready(function() {
 		});
 	}
 
-  // Add some form data to the upload handler
-  file_upload_param.formData = {
-    MAX_FILE_SIZE: $('#uploadMaxFilesize').val(),
-    requesttoken: $('#publicUploadRequestToken').val(),
-    dirToken: $('#dirToken').val(),
-    appname: 'files_sharing',
-    subdir: $('input#dir').val()
-  };
+	var file_upload_start = $('#file_upload_start');
+	file_upload_start.on('fileuploadadd', function(e, data) {
+		// Add custom data to the upload handler
+		data.formData = {
+			requesttoken: $('#publicUploadRequestToken').val(),
+			dirToken: $('#dirToken').val(),
+			subdir: $('input#dir').val()
+		};
+	});
 
-  // Add Uploadprogress Wrapper to controls bar
-  $('#controls').append($('#additional_controls div#uploadprogresswrapper'));
+	// Add Uploadprogress Wrapper to controls bar
+	$('#controls').append($('#additional_controls div#uploadprogresswrapper'));
 
-  // Cancel upload trigger
-  $('#cancel_upload_button').click(Files.cancelUploads);
+	// Cancel upload trigger
+	$('#cancel_upload_button').click(Files.cancelUploads);
 
 });