diff --git a/testdata/.gitignore b/testdata/.gitignore
new file mode 100644
index 0000000..0c1b813
--- /dev/null
+++ b/testdata/.gitignore
@@ -0,0 +1,2 @@
+dot-out
+umldoc-out
diff --git a/testdata/dot-out/.gitignore b/testdata/dot-out/.gitignore
deleted file mode 100644
index b38f805..0000000
--- a/testdata/dot-out/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*.dot
-*.png
diff --git a/testdata/umldoc-out/.gitignore b/testdata/umldoc-out/.gitignore
deleted file mode 100644
index 7f3cc59..0000000
--- a/testdata/umldoc-out/.gitignore
+++ /dev/null
@@ -1,5 +0,0 @@
-gr
-resources
-*.html
-package-list
-*.css