diff --git a/core/templates/altmail.php b/core/templates/altmail.php
index 5df43b5077..00b67bee45 100644
--- a/core/templates/altmail.php
+++ b/core/templates/altmail.php
@@ -1,7 +1,7 @@
 <?php
 print_unescaped($l->t("Hey there,\n\njust letting you know that %s shared %s with you.\nView it: %s\n\n", array($_['user_displayname'], $_['filename'], $_['link'])));
 if ( isset($_['expiration']) ) {
-	print_unescaped($l->t("The share will expire at %s.\n\n", array($_['expiration'])));
+	print_unescaped($l->t("The share will expire on %s.\n\n", array($_['expiration'])));
 }
 p($l->t("Cheers!"));
 ?>
diff --git a/core/templates/mail.php b/core/templates/mail.php
index 1464d2be2f..40092f5491 100644
--- a/core/templates/mail.php
+++ b/core/templates/mail.php
@@ -14,7 +14,7 @@
 <?php
 print_unescaped($l->t('Hey there,<br><br>just letting you know that %s shared »%s« with you.<br><a href="%s">View it!</a><br><br>', array($_['user_displayname'], $_['filename'], $_['link'])));
 if ( isset($_['expiration']) ) {
-	print_unescaped($l->t("The share will expire at %s.<br><br>", array($_['expiration'])));
+	print_unescaped($l->t("The share will expire on %s.<br><br>", array($_['expiration'])));
 }
 p($l->t('Cheers!'));
 ?>