diff --git a/plugin-core/src/main/resources/org/synyx/plugin/core/config/plugin-config.xsd b/plugin-core/src/main/resources/org/synyx/plugin/core/config/plugin-config.xsd
index 10250fa..f9cfd8e 100644
--- a/plugin-core/src/main/resources/org/synyx/plugin/core/config/plugin-config.xsd
+++ b/plugin-core/src/main/resources/org/synyx/plugin/core/config/plugin-config.xsd
@@ -32,6 +32,7 @@
 	<xsd:complexType name="pluginType">
 		<xsd:attribute name="id" type="xsd:string" />
 		<xsd:attribute name="class" type="classType" />
+		<xsd:attribute name="init-factories" type="xsd:boolean" />
 	</xsd:complexType>
 	
 	<xsd:simpleType name="classType">