diff --git a/reactos/boot/environ/lib/misc/bcd.c b/reactos/boot/environ/lib/misc/bcd.c
index c8f80aa2081..3434681cf70 100644
--- a/reactos/boot/environ/lib/misc/bcd.c
+++ b/reactos/boot/environ/lib/misc/bcd.c
@@ -9,6 +9,7 @@
 /* INCLUDES ******************************************************************/
 
 #include "bl.h"
+#include <bcd.h>
 
 /* FUNCTIONS *****************************************************************/