diff --git a/ChangeLog b/ChangeLog
index 0cdaad4722..7c158c3aad 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,7 @@ phpMyAdmin - ChangeLog
 
 4.0.1.0 (not yet released)
 - bug #3879 Import broken for CSV using LOAD DATA
+- bug When login fails and error display is active, login data is displayed
 
 4.0.0.0 (not yet released)
 + Patch #3481047 for rfe #3480477 Insert as new row enhancement
diff --git a/libraries/Error.class.php b/libraries/Error.class.php
index 059fbca11b..e2c013328a 100644
--- a/libraries/Error.class.php
+++ b/libraries/Error.class.php
@@ -300,9 +300,21 @@ class PMA_Error extends PMA_Message
             'require',
             'require_once',
         );
+        $connect_functions = array(
+            'mysql_connect',
+            'mysql_pconnect',
+            'mysqli_connect',
+            'mysqli_real_connect',
+            'PMA_DBI_connect',
+            'PMA_DBI_real_connect',
+        );
 
         if (in_array($function, $include_functions)) {
             $retval .= PMA_Error::relPath($arg);
+        } elseif (in_array($function, $connect_functions)
+            && getType($arg) === 'string'
+        ) {
+            $retval .= getType($arg) . ' ********';
         } elseif (is_scalar($arg)) {
             $retval .= getType($arg) . ' ' . htmlspecialchars($arg);
         } else {