diff --git a/config_gram.y b/config_gram.y
index 48bb8174..8185382c 100644
--- a/config_gram.y
+++ b/config_gram.y
@@ -38,6 +38,7 @@
 #include "pgm.h"
 #include "stk500.h"
 #include "arduino.h"
+#include "buspirate.h"
 #include "stk500v2.h"
 #include "stk500generic.h"
 #include "avr910.h"