diff --git a/include/chipdrivers/opaque.h b/include/chipdrivers/opaque.h
index d172861..d6d3eba 100644
--- a/include/chipdrivers/opaque.h
+++ b/include/chipdrivers/opaque.h
@@ -19,11 +19,15 @@
 #include <stdint.h>
 
 struct flashprog_flashctx;
+struct master_common;
+struct bus_probe;
+struct flashchip;
+
+struct found_id *probe_opaque(const struct bus_probe *, const struct master_common *, const struct flashchip *);
 
 enum preparation_steps;
 int prepare_opaque(struct flashprog_flashctx *, enum preparation_steps);
 
-int probe_opaque(struct flashprog_flashctx *);
 int read_opaque(struct flashprog_flashctx *, uint8_t *buf, unsigned int start, unsigned int len);
 int write_opaque(struct flashprog_flashctx *, const uint8_t *buf, unsigned int start, unsigned int len);
 int erase_opaque(struct flashprog_flashctx *, unsigned int blockaddr, unsigned int blocklen);