diff --git a/htdocs/contrat/list.php b/htdocs/contrat/list.php
index 66d84874d76..83e5d3fd393 100644
--- a/htdocs/contrat/list.php
+++ b/htdocs/contrat/list.php
@@ -455,16 +455,16 @@ if ($search_dfyear != '') {
 if ($search_dfmonth != '') {
 	$param .= '&search_dfmonth='.urlencode($search_dfmonth);
 }
-if ($search_sale != '') {
+if ($search_sale > 0) {
 	$param .= '&search_sale='.urlencode($search_sale);
 }
-if ($search_user != '') {
+if ($search_user > 0) {
 	$param .= '&search_user='.urlencode($search_user);
 }
-if ($search_type_thirdparty != '' && $search_type_thirdparty > 0) {
+if ($search_type_thirdparty > 0) {
 	$param .= '&search_type_thirdparty='.urlencode($search_type_thirdparty);
 }
-if ($search_product_category != '') {
+if ($search_product_category > 0) {
 	$param .= '&search_product_category='.urlencode($search_product_category);
 }
 if ($show_files) {
diff --git a/htdocs/core/class/html.formfile.class.php b/htdocs/core/class/html.formfile.class.php
index 975738b3809..f25a6e0933c 100644
--- a/htdocs/core/class/html.formfile.class.php
+++ b/htdocs/core/class/html.formfile.class.php
@@ -136,6 +136,7 @@ class FormFile
 				$out .= '<input type="hidden" id="'.$htmlname.'_section_id"  name="section_id" value="'.$sectionid.'">'."\n";
 				$out .= '<input type="hidden" name="sortfield" value="'.GETPOST('sortfield', 'aZ09comma').'">'."\n";
 				$out .= '<input type="hidden" name="sortorder" value="'.GETPOST('sortorder', 'aZ09comma').'">'."\n";
+				$out .= '<input type="hidden" name="page_y" value="">'."\n";
 			}
 
 			$out .= '<table class="nobordernopadding centpercent">';
@@ -215,13 +216,13 @@ class FormFile
 				$langs->load('link');
 				$out .= '<span class="nowraponsmartphone"><input style="margin-right: 2px;" type="checkbox" id="overwritefile" name="overwritefile" value="1"><label for="overwritefile">'.$langs->trans("OverwriteIfExists").'</label></span>';
 			}
-			$out .= '<input type="submit" class="button reposition" name="sendit" value="'.$langs->trans("Upload").'"';
+			$out .= '<input type="submit" class="button small reposition" name="sendit" value="'.$langs->trans("Upload").'"';
 			$out .= (empty($conf->global->MAIN_UPLOAD_DOC) || empty($perm) ? ' disabled' : '');
 			$out .= '>';
 
 			if ($addcancel) {
 				$out .= ' &nbsp; ';
-				$out .= '<input type="submit" class="button button-cancel" name="cancel" value="'.$langs->trans("Cancel").'">';
+				$out .= '<input type="submit" class="button small button-cancel" name="cancel" value="'.$langs->trans("Cancel").'">';
 			}
 
 			if (!empty($conf->global->MAIN_UPLOAD_DOC)) {
@@ -275,6 +276,7 @@ class FormFile
 					$out .= '<input type="hidden" name="token" value="'.newToken().'">'."\n";
 					$out .= '<input type="hidden" id="'.$htmlname.'_link_section_dir" name="link_section_dir" value="">'."\n";
 					$out .= '<input type="hidden" id="'.$htmlname.'_link_section_id"  name="link_section_id" value="'.$sectionid.'">'."\n";
+					$out .= '<input type="hidden" name="page_y" value="">'."\n";
 				}
 
 				$out .= '<div class="valignmiddle">';
@@ -293,7 +295,7 @@ class FormFile
 				$out .= '<input type="hidden" name="objectid" value="'.$object->id.'">';
 				$out .= '</div>';
 				$out .= '<div class="inline-block" style="padding-right: 10px;">';
-				$out .= '<input type="submit" class="button" name="linkit" value="'.$langs->trans("ToLink").'"';
+				$out .= '<input type="submit" class="button small reposition" name="linkit" value="'.$langs->trans("ToLink").'"';
 				$out .= (empty($conf->global->MAIN_UPLOAD_DOC) || empty($perm) ? ' disabled' : '');
 				$out .= '>';
 				$out .= '</div>';