diff --git a/src/backend/paths/paths_darwin_test.go b/src/backend/paths/paths_darwin_test.go
new file mode 100644
index 00000000..0f938c54
--- /dev/null
+++ b/src/backend/paths/paths_darwin_test.go
@@ -0,0 +1,16 @@
+package paths
+
+import (
+	"path/filepath"
+	"testing"
+)
+
+func TestAppDataDir_Darwin(t *testing.T) {
+	t.Setenv("HOME", "/Users/test")
+
+	got := AppDataDir()
+	want := filepath.Join("/Users/test", "Library", "Application Support", "Kiji Privacy Proxy")
+	if got != want {
+		t.Errorf("AppDataDir() = %q, want %q", got, want)
+	}
+}
diff --git a/src/backend/paths/paths_test.go b/src/backend/paths/paths_linux_test.go
similarity index 100%
rename from src/backend/paths/paths_test.go
rename to src/backend/paths/paths_linux_test.go