diff --git a/libs/ardour/session_state.cc b/libs/ardour/session_state.cc
index d85f8583d8..5098f5d62b 100644
--- a/libs/ardour/session_state.cc
+++ b/libs/ardour/session_state.cc
@@ -109,7 +109,6 @@
 #include "ardour/midi_scene_changer.h"
 #include "ardour/midi_source.h"
 #include "ardour/midi_track.h"
-#include "ardour/pannable.h"
 #include "ardour/playlist_factory.h"
 #include "ardour/playlist_source.h"
 #include "ardour/port.h"
diff --git a/libs/surfaces/cc121/operations.cc b/libs/surfaces/cc121/operations.cc
index fd74da8df6..403c14160c 100644
--- a/libs/surfaces/cc121/operations.cc
+++ b/libs/surfaces/cc121/operations.cc
@@ -22,7 +22,6 @@
 #include "ardour/async_midi_port.h"
 #include "ardour/monitor_processor.h"
 #include "ardour/monitor_control.h"
-#include "ardour/pannable.h"
 #include "ardour/plugin_insert.h"
 #include "ardour/rc_configuration.h"
 #include "ardour/record_enable_control.h"
diff --git a/libs/surfaces/faderport/operations.cc b/libs/surfaces/faderport/operations.cc
index 45b6b4b425..29f6d977b1 100644
--- a/libs/surfaces/faderport/operations.cc
+++ b/libs/surfaces/faderport/operations.cc
@@ -20,7 +20,6 @@
 
 #include "ardour/async_midi_port.h"
 #include "ardour/monitor_processor.h"
-#include "ardour/pannable.h"
 #include "ardour/plugin_insert.h"
 #include "ardour/rc_configuration.h"
 #include "ardour/record_enable_control.h"
diff --git a/libs/surfaces/mackie/strip.cc b/libs/surfaces/mackie/strip.cc
index 27f70f5195..7f7e9bbe35 100644
--- a/libs/surfaces/mackie/strip.cc
+++ b/libs/surfaces/mackie/strip.cc
@@ -43,7 +43,6 @@
 #include "ardour/meter.h"
 #include "ardour/monitor_control.h"
 #include "ardour/plugin_insert.h"
-#include "ardour/pannable.h"
 #include "ardour/panner.h"
 #include "ardour/panner_shell.h"
 #include "ardour/phase_control.h"
diff --git a/libs/surfaces/us2400/strip.cc b/libs/surfaces/us2400/strip.cc
index 3c08998594..6be3e42ef2 100644
--- a/libs/surfaces/us2400/strip.cc
+++ b/libs/surfaces/us2400/strip.cc
@@ -39,7 +39,6 @@
 #include "ardour/meter.h"
 #include "ardour/monitor_control.h"
 #include "ardour/plugin_insert.h"
-#include "ardour/pannable.h"
 #include "ardour/panner.h"
 #include "ardour/panner_shell.h"
 #include "ardour/phase_control.h"