diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index cdb7e2b4d78..b2a2a7df949 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -2405,19 +2405,22 @@ function dol_print_error($db='',$error='')
 	if ($_SERVER['DOCUMENT_ROOT'])    // Mode web
 	{
 		$out.=$langs->trans("DolibarrHasDetectedError").".<br>\n";
-		if (! empty($conf->global->MAIN_FEATURES_LEVEL))
-		$out.="You use an experimental level of features, so please do NOT report any bugs, anywhere, until going back to MAIN_FEATURES_LEVEL = 0.<br>\n";
+		if (! empty($conf->global->MAIN_FEATURES_LEVEL)) $out.="You use an experimental level of features, so please do NOT report any bugs, anywhere, until going back to MAIN_FEATURES_LEVEL = 0.<br>\n";
 		$out.=$langs->trans("InformationToHelpDiagnose").":<br>\n";
 
-		$out.="<b>".$langs->trans("Date").":</b> ".dol_print_date(time(),'dayhourlog')."<br>\n";;
-		$out.="<b>".$langs->trans("Dolibarr").":</b> ".DOL_VERSION."<br>\n";;
-		if (isset($conf->global->MAIN_FEATURES_LEVEL)) $out.="<b>".$langs->trans("LevelOfFeature").":</b> ".$conf->global->MAIN_FEATURES_LEVEL."<br>\n";;
+		$out.="<b>".$langs->trans("Date").":</b> ".dol_print_date(time(),'dayhourlog')."<br>\n";
+		$out.="<b>".$langs->trans("Dolibarr").":</b> ".DOL_VERSION."<br>\n";
+		if (isset($conf->global->MAIN_FEATURES_LEVEL)) $out.="<b>".$langs->trans("LevelOfFeature").":</b> ".$conf->global->MAIN_FEATURES_LEVEL."<br>\n";
 		if (function_exists("phpversion"))
 		{
 			$out.="<b>".$langs->trans("PHP").":</b> ".phpversion()."<br>\n";
-			//phpinfo();       // This is to show location of php.ini file
 		}
 		$out.="<b>".$langs->trans("Server").":</b> ".$_SERVER["SERVER_SOFTWARE"]."<br>\n";
+		if (function_exists("php_uname"))
+		{
+			$out.="<b>".$langs->trans("OS").":</b> ".php_uname()."<br>\n";
+		}
+		$out.="<b>".$langs->trans("UserAgent").":</b> ".$_SERVER["HTTP_USER_AGENT"]."<br>\n";
 		$out.="<br>\n";
 		$out.="<b>".$langs->trans("RequestedUrl").":</b> ".dol_htmlentities($_SERVER["REQUEST_URI"],ENT_COMPAT,'UTF-8')."<br>\n";
 		$out.="<b>".$langs->trans("Referer").":</b> ".(isset($_SERVER["HTTP_REFERER"])?dol_htmlentities($_SERVER["HTTP_REFERER"],ENT_COMPAT,'UTF-8'):'')."<br>\n";