diff --git a/includes/openlayers.styles.inc b/includes/openlayers.styles.inc
index db864b7..34bd897 100644
--- a/includes/openlayers.styles.inc
+++ b/includes/openlayers.styles.inc
@@ -78,7 +78,7 @@ function _openlayers_openlayers_styles() {
     $style->description = t('!color marker provided by the OpenLayers module.',
       array('!color' => $color));
     $style->data = array(
-      'externalGraphic' => drupal_get_path('module', 'openlayers') .
+      'externalGraphic' => base_path() . drupal_get_path('module', 'openlayers') .
         '/themes/default_dark/img/marker-' . $marker . '.png',
       'graphicWidth' => 21,
       'graphicHeight' => 25,
@@ -95,7 +95,7 @@ function _openlayers_openlayers_styles() {
   $style->title = t('Marker Black');
   $style->description = t('Black marker provided by the OpenLayers module.');
   $style->data = array(
-    'externalGraphic' => drupal_get_path('module', 'openlayers') .
+    'externalGraphic' => base_path() . drupal_get_path('module', 'openlayers') .
       '/themes/default_dark/markers/marker-black.png',
     'graphicWidth' => 25,
     'graphicHeight' => 41,
@@ -110,7 +110,7 @@ function _openlayers_openlayers_styles() {
   $style->title = t('Marker Black Small');
   $style->description = t('Small black marker provided by the OpenLayers module.');
   $style->data = array(
-    'externalGraphic' => drupal_get_path('module', 'openlayers') .
+    'externalGraphic' => base_path() . drupal_get_path('module', 'openlayers') .
       '/themes/default_dark/markers/marker-black-small.png',
     'graphicWidth' => 16,
     'graphicHeight' => 26,