diff --git a/ccid/ccid_slot_sim.h b/ccid/ccid_slot_sim.h
new file mode 100644
index 0000000..6217756
--- /dev/null
+++ b/ccid/ccid_slot_sim.h
@@ -0,0 +1,3 @@
+#pragma once
+
+extern struct ccid_slot_ops slotsim_slot_ops;