diff --git a/firmware/lib/include/utility.h b/firmware/lib/include/utility.h
index f6575ed5f5..660937814a 100644
--- a/firmware/lib/include/utility.h
+++ b/firmware/lib/include/utility.h
@@ -12,6 +12,7 @@
 #define VBOOT_REFERENCE_UTILITY_H_
 
 #include "sysincludes.h"
+#include "vboot_api.h"
 
 /* Debug and error output */
 #ifdef VBOOT_DEBUG