diff --git a/src/hidpp20.c b/src/hidpp20.c
index 464818dd..19e7ab33 100644
--- a/src/hidpp20.c
+++ b/src/hidpp20.c
@@ -1645,7 +1645,7 @@ int hidpp20_onboard_profiles_write(struct hidpp20_device *device,
 	if (rc < 0)
 		return rc;
 
-	if (rc != sizeof(data))
+	if (rc != sizeof(pdata.data))
 		return -EIO;
 
 	return 0;