diff --git a/htdocs/core/class/CMailFile.class.php b/htdocs/core/class/CMailFile.class.php
index 6988d071c01..bd24760030a 100644
--- a/htdocs/core/class/CMailFile.class.php
+++ b/htdocs/core/class/CMailFile.class.php
@@ -756,7 +756,7 @@ class CMailFile
 				// Use mail php function (default PHP method)
 				// ------------------------------------------
 				dol_syslog("CMailFile::sendfile addr_to=".$this->addr_to.", subject=".$this->subject, LOG_DEBUG);
-				dol_syslog("CMailFile::sendfile header=\n".$this->headers, LOG_DEBUG);
+				//dol_syslog("CMailFile::sendfile header=\n".$this->headers, LOG_DEBUG);
 				//dol_syslog("CMailFile::sendfile message=\n".$message);
 
 				// If Windows, sendmail_from must be defined