diff --git a/booking.install b/booking.install
index fb42c02..3e787ac 100644
--- a/booking.install
+++ b/booking.install
@@ -763,8 +763,12 @@ function booking_update_7250() {
 /**
 * Add custom cache table
 */
-function booking_update_7251() {
-	$schema['cache_booking'] = drupal_get_schema_unprocessed('system', 'cache');
+function booking_update_7252() {
+	if (!db_table_exists('cache_booking')) {
+		$schema = drupal_get_schema_unprocessed('system', 'cache');
+    $schema['description'] = 'Cache table used by booking module.';
+		db_create_table('cache_booking', $schema);
+	}		
 }
 
 /**