diff --git a/msg_test.go b/msg_test.go
index af122d8..fca4554 100644
--- a/msg_test.go
+++ b/msg_test.go
@@ -40,6 +40,13 @@ func ExampleQuestion() {
 	// Output:
 }
 
+func ExampleCustomIcon() {
+	zenity.Info("All updates are complete.",
+		zenity.Title("Information"),
+		zenity.CustomIcon("./testdata/icon.png"))
+	// Output:
+}
+
 var msgFuncs = []struct {
 	name string
 	fn   func(string, ...zenity.Option) error
diff --git a/testdata/icon.png b/testdata/icon.png
new file mode 100644
index 0000000..18987fe
Binary files /dev/null and b/testdata/icon.png differ