diff --git a/programmer.h b/programmer.h
index 97c3a8a..4aa9eda 100644
--- a/programmer.h
+++ b/programmer.h
@@ -319,6 +319,7 @@
 	int (*read)(struct flashctx *flash, uint8_t *buf, unsigned int start, unsigned int len);
 	int (*write_256)(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len);
 	int (*write_aai)(struct flashctx *flash, const uint8_t *buf, unsigned int start, unsigned int len);
+	int (*shutdown)(void *data);
 	void *data;
 };