diff --git a/form.php b/form.php
index 0de6f99..2d3c951 100644
--- a/form.php
+++ b/form.php
@@ -782,7 +782,9 @@ class formfield
     // No $this->multiple, $this->rows $this->cols $this->placeholder,
     //    $this->maxlength
     if (! is_array ($this->titles) || count ($this->titles) === 0)
-      $this->titles = array ("");
+      $titles = array ("");
+    else
+      $titles = $this->titles;
     $res = "";
     $res .= "<div class='form-group";
     if (isset ($this->errors))
@@ -812,36 +814,36 @@ class formfield
       $res .= "</label>\n";
     }
     $res .= "    <div class='col-sm-$this->fieldwidth'>\n";
-    foreach ($this->titles as $key=>$val)
+    foreach ($titles as $key=>$val)
     {
       $res .= " <div class='checkbox'>\n";
       $res .= "      <input type='hidden'";
       $res .= " name='$this->formName"."[";
       $res .= htmlspecialchars ($this->name, ENT_QUOTES)."]";
-      if (count ($this->titles) > 1)
+      if (count ($titles) > 1)
         $res .= "[$key]";
       $res .= "' value='unset'";
       $res .= "/>";
       $res .= "<label for='$this->formName"."_";
       $res .= htmlspecialchars ($this->name, ENT_QUOTES);
-      if (count ($this->titles) > 1)
+      if (count ($titles) > 1)
         $res .= "_$key";
       $res .= "'>";
       $res .= "<input type='checkbox'";
       $res .= " name='$this->formName"."[";
       $res .= htmlspecialchars ($this->name, ENT_QUOTES)."]";
-      if (count ($this->titles) > 1)
+      if (count ($titles) > 1)
         $res .= "[$key]";
       $res .= "' id='$this->formName"."_";
       $res .= htmlspecialchars ($this->name, ENT_QUOTES);
-      if (count ($this->titles) > 1)
+      if (count ($titles) > 1)
         $res .= "_$key";
       $res .= "'";
       if (isset ($this->readonly) && $this->readonly !== FALSE)
         $res .= " disabled='disabled'";
       // Do not check by default !
       // Check is enable if not null and not false and not "unset" and not ""
-      if (count ($this->titles) === 1)
+      if (count ($titles) === 1)
       {
         if (isset ($this->values) &&
             $this->values !== null &&