diff --git a/chipdrivers.h b/chipdrivers.h
index 20529d5..16a75a9 100644
--- a/chipdrivers.h
+++ b/chipdrivers.h
@@ -198,6 +198,8 @@
 /* spi4ba.c */
 int spi_enter_4ba_b7(struct flashctx *flash);
 int spi_enter_4ba_b7_we(struct flashctx *flash);
+int spi_exit_4ba_e9(struct flashctx *flash);
+int spi_exit_4ba_e9_we(struct flashctx *flash);
 int spi_byte_program_4ba(struct flashctx *flash, unsigned int addr, uint8_t databyte);
 int spi_nbyte_program_4ba(struct flashctx *flash, unsigned int addr, const uint8_t *bytes, unsigned int len);
 int spi_nbyte_read_4ba(struct flashctx *flash, unsigned int addr, uint8_t *bytes, unsigned int len);