diff --git a/htdocs/emailcollector/class/emailcollector.class.php b/htdocs/emailcollector/class/emailcollector.class.php
index 5eb10ecac86..3028a0bf5df 100644
--- a/htdocs/emailcollector/class/emailcollector.class.php
+++ b/htdocs/emailcollector/class/emailcollector.class.php
@@ -2738,6 +2738,7 @@ class EmailCollector extends CommonObject
 								if ($errorforthisaction) {
 									$errorforactions++;
 								} else {
+									$from = (string) $from;
 									if (!empty($contact_static->email) && $contact_static->email != $from) {
 										$from = $contact_static->email;
 									}