diff --git a/host/examples/tx_samples_from_file.cpp b/host/examples/tx_samples_from_file.cpp
index c0812c0..d620899 100644
--- a/host/examples/tx_samples_from_file.cpp
+++ b/host/examples/tx_samples_from_file.cpp
@@ -36,6 +36,7 @@ template<typename samp_type> void send_from_file(
 ){
     //create a transmit streamer
     uhd::stream_args_t stream_args(cpu_format, wire_format);
+    stream_args.args["peak"] = "0.8";
     uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);

     uhd::tx_metadata_t md;