diff --git a/examples/qtest/bookmarks.test b/examples/qtest/bookmarks.test
index 1a5306d6..655be2e6 100644
--- a/examples/qtest/bookmarks.test
+++ b/examples/qtest/bookmarks.test
@@ -13,7 +13,9 @@ foreach my $show ("", " -show-open")
 {
     foreach my $style ("", " -lines", " -numbers")
     {
-	my $out = "test.$show.$style.out";
+        my $xshow = $show ? $show : "x";
+        my $xstyle = $style ? $style : "x";
+	my $out = "test.$xshow.$xstyle.out";
 	$out =~ s/ //g;
 	$td->runtest("show:$show, style:$style",
 		     {$td->COMMAND => "pdf-bookmarks $show $style 1.pdf"},
diff --git a/examples/qtest/bookmarks/test.-show-open..out b/examples/qtest/bookmarks/test.-show-open.x.out
similarity index 100%
rename from examples/qtest/bookmarks/test.-show-open..out
rename to examples/qtest/bookmarks/test.-show-open.x.out
diff --git a/examples/qtest/bookmarks/test..-lines.out b/examples/qtest/bookmarks/test.x.-lines.out
similarity index 100%
rename from examples/qtest/bookmarks/test..-lines.out
rename to examples/qtest/bookmarks/test.x.-lines.out
diff --git a/examples/qtest/bookmarks/test..-numbers.out b/examples/qtest/bookmarks/test.x.-numbers.out
similarity index 100%
rename from examples/qtest/bookmarks/test..-numbers.out
rename to examples/qtest/bookmarks/test.x.-numbers.out
diff --git a/examples/qtest/bookmarks/test...out b/examples/qtest/bookmarks/test.x.x.out
similarity index 100%
rename from examples/qtest/bookmarks/test...out
rename to examples/qtest/bookmarks/test.x.x.out