diff --git a/gtk2_ardour/automation_line.cc b/gtk2_ardour/automation_line.cc
index ae27a3fc14..d835954f1a 100644
--- a/gtk2_ardour/automation_line.cc
+++ b/gtk2_ardour/automation_line.cc
@@ -38,8 +38,6 @@
 #include <climits>
 #include <vector>
 
-#include "boost/shared_ptr.hpp"
-
 #include "pbd/floating.h"
 #include "pbd/memento_command.h"
 #include "pbd/stl_delete.h"
diff --git a/gtk2_ardour/midi_channel_selector.h b/gtk2_ardour/midi_channel_selector.h
index bc035c8f0d..7ed6a7f718 100644
--- a/gtk2_ardour/midi_channel_selector.h
+++ b/gtk2_ardour/midi_channel_selector.h
@@ -24,7 +24,6 @@
 #define __ardour_ui_midi_channel_selector_h__
 
 #include <set>
-#include "boost/shared_ptr.hpp"
 #include "sigc++/trackable.h"
 
 #include "gtkmm/table.h"
diff --git a/libs/ardour/ardour/clip_library.h b/libs/ardour/ardour/clip_library.h
index 1ad9937f9f..4dfa031784 100644
--- a/libs/ardour/ardour/clip_library.h
+++ b/libs/ardour/ardour/clip_library.h
@@ -25,8 +25,6 @@
 
 #include <string>
 
-#include "boost/shared_ptr.hpp"
-
 #include "pbd/signals.h"
 
 #include "ardour/libardour_visibility.h"
diff --git a/libs/ardour/ardour/utils.h b/libs/ardour/ardour/utils.h
index 32c27fc26a..337df374d2 100644
--- a/libs/ardour/ardour/utils.h
+++ b/libs/ardour/ardour/utils.h
@@ -32,8 +32,6 @@
 #include <string>
 #include <cmath>
 
-#include "boost/shared_ptr.hpp"
-
 #if __APPLE__
 #include <CoreFoundation/CoreFoundation.h>
 #endif /* __APPLE__ */
diff --git a/libs/audiographer/wscript b/libs/audiographer/wscript
index ad8594d4d2..5d726d4d04 100644
--- a/libs/audiographer/wscript
+++ b/libs/audiographer/wscript
@@ -28,7 +28,6 @@ def configure(conf):
     autowaf.check_pkg(conf, 'fftw3f', uselib_store='FFTW3F', mandatory=True)
 
     # Boost headers
-    autowaf.check_header(conf, 'cxx', 'boost/shared_ptr.hpp')
     autowaf.check_header(conf, 'cxx', 'boost/format.hpp')
 
 def build(bld):
diff --git a/libs/pbd/boost-debug/shared_ptr.hpp b/libs/pbd/boost-debug/shared_ptr.hpp
index f64b582d99..39aa0111f0 100644
--- a/libs/pbd/boost-debug/shared_ptr.hpp
+++ b/libs/pbd/boost-debug/shared_ptr.hpp
@@ -1,9 +1,5 @@
 #define DEBUG_SHARED_PTR
-#ifndef DEBUG_SHARED_PTR
-
-#include <boost/shared_ptr.hpp>
-
-#else
+#ifdef DEBUG_SHARED_PTR
 
 #include "pbd/stacktrace.h"
 
diff --git a/libs/pbd/boost_debug.cc b/libs/pbd/boost_debug.cc
index b60a7b7336..c9a9f58a30 100644
--- a/libs/pbd/boost_debug.cc
+++ b/libs/pbd/boost_debug.cc
@@ -29,7 +29,6 @@
 #include <set>
 #include <vector>
 #include <glibmm/threads.h>
-#include <boost/shared_ptr.hpp>
 
 #include "pbd/stacktrace.h"
 #include "pbd/boost_debug.h"