diff --git a/channels/chan_vpb.cc b/channels/chan_vpb.cc
index 595ac8fee2cd00bd799d9697c62d5c10ec32b090..87342b1d020ba756cabb52256255cf3e540b7218 100644
--- a/channels/chan_vpb.cc
+++ b/channels/chan_vpb.cc
@@ -373,7 +373,9 @@ static struct ast_channel_tech vpb_tech = {
 	hangup: vpb_hangup,
 	answer: vpb_answer,
 	read: vpb_read,
+	read_stream: NULL,
 	write: vpb_write,
+	write_stream: NULL,
 	send_text: NULL,
 	send_image: NULL,
 	send_html: NULL,
@@ -404,7 +406,9 @@ static struct ast_channel_tech vpb_tech_indicate = {
 	hangup: vpb_hangup,
 	answer: vpb_answer,
 	read: vpb_read,
+	read_stream: NULL,
 	write: vpb_write,
+	write_stream: NULL,
 	send_text: NULL,
 	send_image: NULL,
 	send_html: NULL,