--- a/gmap.install	2013-10-18 19:20:44.000000000 +1100
+++ b/gmap.install	2013-11-20 10:59:06.699304900 +1100
@@ -111,3 +111,14 @@ function gmap_update_7000() {
   return $ret;
 }
 */
+
+/**
+ * Mini-update -- update gmap markerfiles variable to an array if it is not
+ * already.
+ */
+function gmap_update_7201() {
+  $markerdirs = variable_get('gmap_markerfiles', array(drupal_get_path('module', 'gmap') . '/markers'));
+  if (!is_array($markerdirs)) {
+   variable_set('gmap_markerfiles', array($markerdirs));
+  }
+}
\ No newline at end of file