diff --git a/spice/controller_prot.h b/spice/controller_prot.h
index 38329c5..697baa0 100644
--- a/spice/controller_prot.h
+++ b/spice/controller_prot.h
@@ -18,6 +18,8 @@
 #ifndef _H_CONTROLLER_PROT
 #define _H_CONTROLLER_PROT
 
+#include <spice/types.h>
+
 #define CONTROLLER_MAGIC      (*(uint32_t*)"CTRL")
 #define CONTROLLER_VERSION    1