diff --git a/htdocs/core/class/html.formpropal.class.php b/htdocs/core/class/html.formpropal.class.php
index fbbf2c97fb7..7cce3c839c5 100644
--- a/htdocs/core/class/html.formpropal.class.php
+++ b/htdocs/core/class/html.formpropal.class.php
@@ -139,7 +139,7 @@ class FormPropal
 		} else {
 			print '<option value="2,4">';
 		}
-		print ($langs->trans($prefix.'Signed'.($short ? 'Short' : '')).'+'.$langs->trans($prefix.'Billed'.($short ? 'Short' : '')));
+		print ($langs->trans($prefix.'Signed'.($short ? 'Short' : '')).' '.$langs->trans("or").' '.$langs->trans($prefix.'Billed'.($short ? 'Short' : '')));
 		print '</option>';
 		print '</select>';