+# Also remove the interface-admin group to avoid confusion.
+$wgGroupPermissions['sysop'] = array_merge( $wgGroupPermissions['sysop'], $wgGroupPermissions['interface-admin'] );
+unset( $wgGroupPermissions['interface-admin'] );
+unset( $wgRevokePermissions['interface-admin'] );
+unset( $wgAddGroups['interface-admin'] );
+unset( $wgRemoveGroups['interface-admin'] );
+unset( $wgGroupsAddToSelf['interface-admin'] );
+unset( $wgGroupsRemoveFromSelf['interface-admin'] );