diff --git a/programmer.h b/programmer.h
index 7a301f3..303fbc4 100644
--- a/programmer.h
+++ b/programmer.h
@@ -473,7 +473,7 @@
 extern struct decode_sizes max_rom_decode;
 extern int programmer_may_write;
 extern unsigned long flashbase;
-void check_chip_supported(const struct flashctx *flash);
+void check_chip_supported(const struct flashchip *chip);
 int check_max_decode(enum chipbustype buses, uint32_t size);
 char *extract_programmer_param(const char *param_name);