diff --git a/tests/bluetooth/tester/src/audio/btp_bap_broadcast.c b/tests/bluetooth/tester/src/audio/btp_bap_broadcast.c
index f65719214f3b..e0d8724066c5 100644
--- a/tests/bluetooth/tester/src/audio/btp_bap_broadcast.c
+++ b/tests/bluetooth/tester/src/audio/btp_bap_broadcast.c
@@ -474,7 +474,7 @@ uint8_t btp_bap_broadcast_source_setup(const void *cmd, uint16_t cmd_len,
 
 	rp->gap_settings = gap_settings;
 	sys_put_le24(broadcast_id, rp->broadcast_id);
-	*rsp_len = sizeof(*rp) + 1;
+	*rsp_len = sizeof(*rp);
 
 	return BTP_STATUS_SUCCESS;
 }
@@ -589,7 +589,7 @@ uint8_t btp_bap_broadcast_source_setup_v2(const void *cmd, uint16_t cmd_len,
 	}
 
 	rp->gap_settings = gap_settings;
-	*rsp_len = sizeof(*rp) + 1;
+	*rsp_len = sizeof(*rp);
 
 	return BTP_STATUS_SUCCESS;
 }