diff --git a/tests/testdata/sp-rw.bin b/tests/testdata/sp-rw.bin
new file mode 100644
index 0000000000..df31026f69
--- /dev/null
+++ b/tests/testdata/sp-rw.bin
@@ -0,0 +1 @@
+This is a pretend sp-rw.bin image.