diff --git a/config.inc.php.sample b/config.inc.php.sample
index c9c8397..0a6ccad 100644
--- a/config.inc.php.sample
+++ b/config.inc.php.sample
@@ -12,6 +12,10 @@ if (preg_match("/config.inc.php/", $_SERVER['SCRIPT_NAME'])) {
 	exit;
 }
 
+// Debug mode
+// Enables PHP error output
+$CONF['debug'] = 'true';
+
 // Language config
 // Language files are located in './languages'.
 $CONF['default_language'] = 'en';
diff --git a/functions.inc.php b/functions.inc.php
index 24c6ce2..6c9036f 100644
--- a/functions.inc.php
+++ b/functions.inc.php
@@ -7,11 +7,6 @@
 //
 // File: functions.inc.php
 //
-ini_set('display_errors', 1);
-ini_set('display_startup_errors', 1);
-error_reporting(E_ALL);
-mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
-
 if(preg_match("/functions.inc.php/", $_SERVER['SCRIPT_NAME'])) {
 	header("Location: login.php");
 	exit;
@@ -19,6 +14,19 @@ if(preg_match("/functions.inc.php/", $_SERVER['SCRIPT_NAME'])) {
 
 $version = "1.0.0";
 
+//
+// Check of debug is enabled or not
+//
+if ($CONF['debug'] == 'true') {
+	ini_set('display_errors', 1);
+	ini_set('display_startup_errors', 1);
+	error_reporting(E_ALL);
+	mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
+} else {
+	ini_set('display_errors', 0);
+	ini_set('display_startup_errors', 0);		
+}
+
 //
 // check_session
 // Action: Check if a session already exists, if not redirect to login.php