diff --git a/mRemoteV1/Schemas/mremoteng_confcons_v2_6.xsd b/mRemoteV1/Schemas/mremoteng_confcons_v2_6.xsd
index d09616e63..1ee8f2b06 100644
--- a/mRemoteV1/Schemas/mremoteng_confcons_v2_6.xsd
+++ b/mRemoteV1/Schemas/mremoteng_confcons_v2_6.xsd
@@ -17,6 +17,7 @@
       </xs:choice>
       <xs:attribute name="EncryptionEngine" type="xs:string" use="required" />
       <xs:attribute name="BlockCipherMode" type="xs:string" use="required" />
+      <xs:attribute name="EncryptionVersion" type="xs:float" use="required" />
     </xs:complexType>
   </xs:element>