diff --git a/src/Service/SignatureService.php b/src/Service/SignatureService.php
index 908b8ffdfa97537fa9b9351c0320f4b3b536d8c4..b40a59317dec94064d29dc07839cdd379ec7a9a4 100644
--- a/src/Service/SignatureService.php
+++ b/src/Service/SignatureService.php
@@ -309,7 +309,11 @@ class SignatureService
                 $recipients = array_values($recipientsDatas);
             }
             else {
-                $recipients = $step->getOptions()['recipients'];
+                $optionsStep = $step->getOptions();
+                if(array_key_exists('recipients', $optionsStep))
+                {
+                    $recipients = $step->getOptions()['recipients'];
+                }
             }
 
             if ($recipients == null) {