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-rw-r--r--system/libraries/Email.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index e28c23a04..f1d65a3eb 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -452,7 +452,7 @@ class CI_Email {
*/
public function set_alt_message($str = '')
{
- $this->alt_message = $str;
+ $this->alt_message = (string) $str;
return $this;
}