diff --git a/tests/14account/02deactivate.pl b/tests/14account/02deactivate.pl
index 20b03d6be..d0e806b9e 100644
--- a/tests/14account/02deactivate.pl
+++ b/tests/14account/02deactivate.pl
@@ -43,13 +43,15 @@ sub matrix_deactivate_account
 
          my $body = decode_json $resp->content;
 
-         assert_json_keys( $body, qw( error errcode params completed flows ));
+         assert_json_keys( $body, qw( error errcode params flows ));
 
          my $errcode = $body->{errcode};
 
          $errcode eq "M_FORBIDDEN" or
             die "Expected errcode to be M_FORBIDDEN but was $errcode";
 
+         exists $body->{completed} and die "Got an unexpected a 'completed' key";
+
          Future->done(1);
       });
    };