diff --git a/includes/views/fullcalendar.views.inc b/includes/views/fullcalendar.views.inc
index c0641b9..7a1f09c 100644
--- a/includes/views/fullcalendar.views.inc
+++ b/includes/views/fullcalendar.views.inc
@@ -109,9 +109,10 @@ function fullcalendar_views_pre_view(&$view, &$display_id, &$args) {
     // Add an exposed filter for the date field.
     $field_value_id = $field->real_field . str_replace($field->field, '', $field_id);
     if (isset($exposed_input[$field_value_id])) {
-      $timestamp = (strtotime($exposed_input[$field_value_id]['min']['date']) + strtotime($exposed_input[$field_value_id]['max']['date'])) / 2;
-      $min = date('Y-m', $timestamp);
-      $max = date('Y-m', strtotime($min . ' +1 month'));
+      $exposed = $exposed_input[$field_value_id];
+      $min = mktime(0, 0, 0, $exposed['min']['month'], $exposed['min']['day'], $exposed['min']['year']);
+      $max = mktime(0, 0, 0, $exposed['max']['month'], $exposed['max']['day'], $exposed['max']['year']);
+      $timestamp = ($min + $max) / 2;
     }
     else {
       $min = date('Y-m', mktime(0, 0, 0, $settings['date']['month'] + 1, 1, $settings['date']['year']));