diff --git image_captcha/css/image_captcha.css image_captcha/css/image_captcha.css
new file mode 100644
index 0000000..e7ff5b9
--- /dev/null
+++ image_captcha/css/image_captcha.css
@@ -0,0 +1,31 @@
+/* $Id: image_captcha.css,v 1.2 2009/12/15 23:55:23 soxofaan Exp $ */
+
+/**
+ * Styling of the font selection list (with previews)
+ * on the Image CAPTCHA settings page.
+ */
+
+/**
+ * Float the fonts with preview (with a fixed width)
+ * to create a multi-column layout.
+ */
+.image_captcha_admin_font_preview {
+  float: left;
+  width: 160px;
+}
+
+/**
+ * Fonts without a preview should not follow the column layout.
+ */
+.image_captcha_admin_fonts_selection .form-item {
+  clear: both;
+}
+
+/**
+ * Center the font previews vertically to the text.
+ */
+.image_captcha_admin_fonts_selection img {
+  vertical-align: middle;
+}
+
+
diff --git image_captcha/css/image_captcha_rtl.css image_captcha/css/image_captcha_rtl.css
new file mode 100644
index 0000000..6eca9e4
--- /dev/null
+++ image_captcha/css/image_captcha_rtl.css
@@ -0,0 +1,18 @@
+/* $Id$ */
+
+/**
+ * RTL css
+ */
+
+/**
+ * Styling of the font selection list (with previews)
+ * on the Image CAPTCHA settings page.
+ */
+
+/**
+ * Float the fonts with preview (with a fixed width)
+ * to create a multi-column layout.
+ */
+.image_captcha_admin_font_preview {
+  float: right;
+}
diff --git image_captcha/image_captcha.admin.inc image_captcha/image_captcha.admin.inc
index d15714e..ed44c86 100644
--- image_captcha/image_captcha.admin.inc
+++ image_captcha/image_captcha.admin.inc
@@ -14,7 +14,11 @@
 function image_captcha_settings_form() {
 
   // Add CSS for theming of admin form.
-  drupal_add_css(drupal_get_path('module', 'image_captcha') .'/image_captcha.css');
+  drupal_add_css(drupal_get_path('module', 'image_captcha') .'/css/image_captcha.css');
+  global $language;
+  if ($language->direction) {
+    drupal_add_css(drupal_get_path('module', 'image_captcha') .'/css/image_captcha_rtl.css');
+  }
   // Use javascript for some added usability on admin form.
   drupal_add_js(drupal_get_path('module', 'image_captcha') .'/image_captcha.js');
 
@@ -59,6 +63,12 @@ function image_captcha_settings_form() {
     '#default_value' => (int) variable_get('image_captcha_code_length', 5),
     '#description' => t('The code length influences the size of the image. Note that larger values make the image generation more CPU intensive.'),
   );
+  $form['image_captcha_code_settings']['image_captcha_direction'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('RTL direction for RTL languages'),
+    '#default_value' => variable_get('image_captcha_direction', 0),
+    '#description' => t('This option will cause characters in captcha image to start from the right if the current language is RTL.'),
+  );
 
   // Font related stuff.
   $form['image_captcha_font_settings'] = _image_captcha_settings_form_font_section();
diff --git image_captcha/image_captcha.css image_captcha/image_captcha.css
deleted file mode 100644
index e7ff5b9..0000000
--- image_captcha/image_captcha.css
+++ /dev/null
@@ -1,31 +0,0 @@
-/* $Id: image_captcha.css,v 1.2 2009/12/15 23:55:23 soxofaan Exp $ */
-
-/**
- * Styling of the font selection list (with previews)
- * on the Image CAPTCHA settings page.
- */
-
-/**
- * Float the fonts with preview (with a fixed width)
- * to create a multi-column layout.
- */
-.image_captcha_admin_font_preview {
-  float: left;
-  width: 160px;
-}
-
-/**
- * Fonts without a preview should not follow the column layout.
- */
-.image_captcha_admin_fonts_selection .form-item {
-  clear: both;
-}
-
-/**
- * Center the font previews vertically to the text.
- */
-.image_captcha_admin_fonts_selection img {
-  vertical-align: middle;
-}
-
-
diff --git image_captcha/image_captcha.user.inc image_captcha/image_captcha.user.inc
index 2a9a8e5..815c365 100644
--- image_captcha/image_captcha.user.inc
+++ image_captcha/image_captcha.user.inc
@@ -254,6 +254,10 @@ function _image_captcha_image_generator_print_string(&$image, $width, $height, $
   $ccage_width = $width / $character_quantity;
   $ccage_height = $height;
 
+  global $language;
+  if ($language->direction && ((bool) variable_get('image_captcha_direction', FALSE))) {
+    $characters = array_reverse($characters);
+  }
   foreach ($characters as $c => $character) {
     // initial position of character: in the center of its cage
     $center_x = ($c + 0.5) * $ccage_width;