diff --git a/lib/decoding/tch_f_decoder_impl.cc b/lib/decoding/tch_f_decoder_impl.cc
index 02dc45a..03e8fc8 100644
--- a/lib/decoding/tch_f_decoder_impl.cc
+++ b/lib/decoding/tch_f_decoder_impl.cc
@@ -92,7 +92,7 @@
     {
         //setup input/output ports
         message_port_register_in(pmt::mp("bursts"));
-        set_msg_handler(pmt::mp("bursts"), boost::bind(&tch_f_decoder_impl::decode, this, _1));
+        set_msg_handler(pmt::mp("bursts"), boost::bind(&tch_f_decoder_impl::decode, this, boost::placeholders::_1));
         message_port_register_out(pmt::mp("msgs"));
         message_port_register_out(pmt::mp("voice"));