diff --git a/htdocs/core/class/html.formfile.class.php b/htdocs/core/class/html.formfile.class.php
index 9fde21d24de..7a1f2101ee7 100644
--- a/htdocs/core/class/html.formfile.class.php
+++ b/htdocs/core/class/html.formfile.class.php
@@ -77,7 +77,7 @@ class FormFile
 	 *  @param	string		$htmlname		Name and id of HTML form ('formuserfile' by default, 'formuserfileecm' when used to upload a file in ECM)
 	 *  @param	string		$accept			Specifies the types of files accepted (This is not a security check but an user interface facility. eg '.pdf,image/*' or '.png,.jpg' or 'video/*')
 	 *	@param	string		$sectiondir		If upload must be done inside a particular directory (if sectiondir defined, sectionid must not be)
-	 *  @param  int         $usewithoutform 0=Default, 1=Disable <form> and style to use in existing area
+	 *  @param  int         $usewithoutform 0=Default, 1=Disable <form> and <input hidden> to use in existing form area, 2=Disable the tag <form> only
 	 *  @param	int			$capture		1=Add tag capture="capture" to force use of micro or video recording to generate file. When setting this to 1, you must also provide a value for $accept.
 	 *  @param	int			$disablemulti	0=Default, 1=Disable multiple file upload
 	 *  @param	int			$nooutput		0=Output result with print, 1=Return result
@@ -129,6 +129,8 @@ class FormFile
 				$url .= (strpos($url, '?') === false ? '?' : '&').'uploadform=1';
 
 				$out .= '<form name="'.$htmlname.'" id="'.$htmlname.'" action="'.$url.'" enctype="multipart/form-data" method="POST">'."\n";
+			}
+			if (empty($usewithoutform) || $usewithoutform == 2) {
 				$out .= '<input type="hidden" name="token" value="'.newToken().'">'."\n";
 				$out .= '<input type="hidden" id="'.$htmlname.'_section_dir" name="section_dir" value="'.$sectiondir.'">'."\n";
 				$out .= '<input type="hidden" id="'.$htmlname.'_section_id"  name="section_id" value="'.$sectionid.'">'."\n";
diff --git a/htdocs/core/tpl/filemanager.tpl.php b/htdocs/core/tpl/filemanager.tpl.php
index 41e7c937d6a..57a95c48ece 100644
--- a/htdocs/core/tpl/filemanager.tpl.php
+++ b/htdocs/core/tpl/filemanager.tpl.php
@@ -16,6 +16,7 @@
  *
  * Output code for the filemanager
  * $module must be defined ('ecm', 'medias', ...)
+ * $formalreadyopen can be set to 1 to avoid to open the <form> to submit files a second time
  */
 
 // Protection to avoid direct call of template
@@ -145,7 +146,7 @@ if ((!empty($conf->use_javascript_ajax) && empty($conf->global->MAIN_ECM_DISABLE
 	print '<!-- Start form to attach new file in filemanager.tpl.php sectionid='.$section.' sectiondir='.$sectiondir.' -->'."\n";
 	include_once DOL_DOCUMENT_ROOT.'/core/class/html.formfile.class.php';
 	$formfile = new FormFile($db);
-	print $formfile->form_attach_new_file($_SERVER["PHP_SELF"], 'none', 0, ($section ? $section : -1), $permtoupload, 48, null, '', 0, '', 0, $nameforformuserfile, '', $sectiondir, 0, 0, 0, 1);
+	print $formfile->form_attach_new_file($_SERVER["PHP_SELF"], 'none', 0, ($section ? $section : -1), $permtoupload, 48, null, '', 0, '', 0, $nameforformuserfile, '', $sectiondir, empty($formalreadyopen) ? 0 : $formalreadyopen, 0, 0, 1);
 } else {
 	print '&nbsp;';
 }
diff --git a/htdocs/website/index.php b/htdocs/website/index.php
index 531a4a11d9f..aa2b357a794 100644
--- a/htdocs/website/index.php
+++ b/htdocs/website/index.php
@@ -2506,7 +2506,8 @@ $moreheadjs .= '</script>'."\n";
 llxHeader($moreheadcss.$moreheadjs, $langs->trans("WebsiteSetup"), $helpurl, '', 0, 0, $arrayofjs, $arrayofcss, '', '', '<!-- Begin div class="fiche" -->'."\n".'<div class="fichebutwithotherclass">');
 
 print "\n";
-print '<form action="'.$_SERVER["PHP_SELF"].'" method="POST" enctype="multipart/form-data">';
+print '<!-- Open form for all page -->'."\n";
+print '<form action="'.$_SERVER["PHP_SELF"].($action == 'file_manager' ? '?uploadform=1': '').'" method="POST" enctype="multipart/form-data">';
 print '<input type="hidden" name="token" value="'.newToken().'">';
 print '<input type="hidden" name="backtopage" value="'.$backtopage.'">';
 
@@ -4043,6 +4044,7 @@ if ($action == 'editfile' || $action == 'file_manager' || $action == 'convertimg
 
 
 	$module = 'medias';
+	$formalreadyopen = 2;	// So the form to submit a new file will not be opened another time inside the core/tpl/filemanager.tpl.php
 	if (empty($url)) {
 		$url = DOL_URL_ROOT.'/website/index.php'; // Must be an url without param
 	}