diff --git a/libs/ardour/session_bundles.cc b/libs/ardour/session_bundles.cc
index 558c63716c..f1ca9f8f39 100644
--- a/libs/ardour/session_bundles.cc
+++ b/libs/ardour/session_bundles.cc
@@ -29,8 +29,6 @@
 
 #include <cstdio>
 
-#include <boost/algorithm/string/erase.hpp>
-
 #include "pbd/i18n.h"
 
 #include "ardour/async_midi_port.h"
@@ -238,7 +236,7 @@ Session::setup_bundles ()
 		if (!pn.empty()) {
 			n = pn;
 		} else {
-			boost::erase_first (n, X_("alsa_pcm:"));
+			n.erase (n.find_first_of (X_("alsa_pcm:")), 1);
 		}
 		std::shared_ptr<Bundle> c (new Bundle (n, false));
 		c->add_channel ("", DataType::MIDI);
@@ -254,7 +252,7 @@ Session::setup_bundles ()
 		if (!pn.empty()) {
 			n = pn;
 		} else {
-			boost::erase_first (n, X_("alsa_pcm:"));
+			n.erase (n.find_first_of (X_("alsa_pcm:")), 1);
 		}
 		std::shared_ptr<Bundle> c (new Bundle (n, true));
 		c->add_channel ("", DataType::MIDI);