diff --git a/Hardware-API.md b/Hardware-API.md
index 362f484..a6bbe9f 100644
--- a/Hardware-API.md
+++ b/Hardware-API.md
@@ -180,7 +180,7 @@ Master mode:
 
 Master mode transfers:
 
-- `i2c.readfrom(addr, nbytes)`
+- `i2c.readfrom(addr, nbytes, *, stop=True)`
 - `i2c.readfrom_into(addr, buf, *, stop=True)` NOHEAP; stop is if we want to send a stop bit at the end
 - `i2c.writeto(addr, buf, *, stop=True)` NOHEAP; stop is if we want to send a stop bit at the end