diff --git a/introspection/nm-vpn-connection.xml b/introspection/nm-vpn-connection.xml
index 65b9178543..3009126660 100644
--- a/introspection/nm-vpn-connection.xml
+++ b/introspection/nm-vpn-connection.xml
@@ -25,11 +25,16 @@
       <tp:docstring>
         Emitted when the state of the VPN connection has changed.
       </tp:docstring>
-      <arg name="state" type="u" tp:type="NM_VPN_CONNECTION_STATE">
+      <arg name="new_state" type="u" tp:type="NM_VPN_CONNECTION_STATE">
         <tp:docstring>
           The new state of the VPN connection.
         </tp:docstring>
       </arg>
+      <arg name="old_state" type="u" tp:type="NM_VPN_CONNECTION_STATE">
+        <tp:docstring>
+          The old state of the VPN connection.
+        </tp:docstring>
+      </arg>
       <arg name="reason" type="u" tp:type="NM_VPN_CONNECTION_STATE_REASON">
         <tp:docstring>
           Reason code describing the change to the new state.