diff --git a/hv7131r.c b/hv7131r.c
index 4ae7c2a..a4ffd9d 100644
--- a/hv7131r.c
+++ b/hv7131r.c
@@ -67,7 +67,11 @@ int hv7131r_set_exposure(struct usb_sn9c20x *dev)
 	buf[1] = (val >> 8) & 0xff;
 	buf[2] = val & 0xff;
 
-	ret = sn9c20x_write_i2c_data_ext(dev, 3, 0x25, buf, 0x1e);
+	ret = sn9c20x_write_i2c_data(dev, 1, 0x25, &buf[0]);
+	if (ret >= 0)
+		ret = sn9c20x_write_i2c_data(dev, 1, 0x26, &buf[1]);
+	if (ret >= 0)
+		ret = sn9c20x_write_i2c_data(dev, 1, 0x27, &buf[2]);
 
 	return ret;
 }