diff --git a/wsdl/ver10/recording.wsdl b/wsdl/ver10/recording.wsdl
index 61fbe9d34..4796d2f3d 100644
--- a/wsdl/ver10/recording.wsdl
+++ b/wsdl/ver10/recording.wsdl
@@ -569,7 +569,7 @@ IN NO EVENT WILL THE CORPORATION OR ITS MEMBERS OR THEIR AFFILIATES BE LIABLE FO
 						<xs:element name="Extension" minOccurs="0">
 							<xs:complexType>
 								<xs:sequence>
-									<xs:any namespace="##any" processContents="lax">	 <!-- first Vendor then ONVIF -->
+									<xs:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded">	 <!-- first Vendor then ONVIF -->
 										<xs:annotation>
 											<xs:documentation>Extensibility point.</xs:documentation>
 										</xs:annotation>