diff --git a/appinfo/update.php b/appinfo/update.php
index 3872060e..0e6953d2 100644
--- a/appinfo/update.php
+++ b/appinfo/update.php
@@ -42,3 +42,11 @@ if (version_compare($installedVersion, '0.3.0.14', '==')) {
 	$stmt = OCP\DB::prepare('DELETE FROM `*PREFIX*contacts_ocu_cards_properties`');
 	$result = $stmt->execute(array());
 }
+
+if(version_compare($installedVersion, '0.3.0.18', '<')){
+	$stmt = OCP\DB::prepare('DELETE FROM `*PREFIX*contacts_cards_properties`
+							WHERE NOT EXISTS(SELECT NULL
+                    		FROM `*PREFIX*contacts_cards`
+                   			WHERE `*PREFIX*contacts_cards`.id = `*PREFIX*contacts_cards_properties`.contactid)');
+	$result = $stmt->execute(array());
+}
diff --git a/appinfo/version b/appinfo/version
index 2382399e..05c9e3cc 100644
--- a/appinfo/version
+++ b/appinfo/version
@@ -1 +1 @@
-0.3.0.17
+0.3.0.18