diff --git a/flashrom.c b/flashrom.c
index 503a199..838dfd0 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -2294,7 +2294,7 @@
  * containing included regions will be touched.
  *
  * @param flashctx The context of the flash chip.
- * @param buffer Source buffer to read image from.
+ * @param buffer Source buffer to read image from (may be altered for full verification).
  * @param buffer_len Size of source buffer in bytes.
  * @return 0 on success,
  *         4 if buffer_len doesn't match the size of the flash chip,
diff --git a/libflashrom.h b/libflashrom.h
index 1937194..09a88c4 100644
--- a/libflashrom.h
+++ b/libflashrom.h
@@ -59,7 +59,7 @@
 bool flashrom_flag_get(const struct flashrom_flashctx *, enum flashrom_flag);
 
 int flashrom_image_read(struct flashrom_flashctx *, void *buffer, size_t buffer_len);
-int flashrom_image_write(struct flashrom_flashctx *, const void *buffer, size_t buffer_len);
+int flashrom_image_write(struct flashrom_flashctx *, void *buffer, size_t buffer_len);
 int flashrom_image_verify(struct flashrom_flashctx *, const void *buffer, size_t buffer_len);
 
 struct flashrom_layout;