diff --git a/src/systemc/ext/channel/sc_event_queue.hh b/src/systemc/ext/channel/sc_event_queue.hh
index 93a6e258ef..05ff46ecb0 100644
--- a/src/systemc/ext/channel/sc_event_queue.hh
+++ b/src/systemc/ext/channel/sc_event_queue.hh
@@ -38,7 +38,6 @@
 #include "../core/sc_module_name.hh"
 #include "../core/sc_port.hh"
 #include "../core/sc_time.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_core
 {
diff --git a/src/systemc/ext/channel/sc_fifo_in.hh b/src/systemc/ext/channel/sc_fifo_in.hh
index 541d1fcaa9..75594afdbb 100644
--- a/src/systemc/ext/channel/sc_fifo_in.hh
+++ b/src/systemc/ext/channel/sc_fifo_in.hh
@@ -33,7 +33,6 @@
 #include "../core/sc_event.hh"
 #include "../core/sc_port.hh"
 #include "sc_fifo_in_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_core
 {
diff --git a/src/systemc/ext/channel/sc_fifo_out.hh b/src/systemc/ext/channel/sc_fifo_out.hh
index 52840305bc..4eda77ea22 100644
--- a/src/systemc/ext/channel/sc_fifo_out.hh
+++ b/src/systemc/ext/channel/sc_fifo_out.hh
@@ -32,7 +32,6 @@
 
 #include "../core/sc_port.hh"
 #include "sc_fifo_out_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_core
 {
diff --git a/src/systemc/ext/channel/sc_inout_resolved.hh b/src/systemc/ext/channel/sc_inout_resolved.hh
index 7466bc34c2..ebcb0a4cf6 100644
--- a/src/systemc/ext/channel/sc_inout_resolved.hh
+++ b/src/systemc/ext/channel/sc_inout_resolved.hh
@@ -33,7 +33,6 @@
 #include "sc_inout.hh"
 #include "sc_signal_in_if.hh"
 #include "sc_signal_inout_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_dt
 {
diff --git a/src/systemc/ext/channel/sc_inout_rv.hh b/src/systemc/ext/channel/sc_inout_rv.hh
index 046146924b..54f54ff7c3 100644
--- a/src/systemc/ext/channel/sc_inout_rv.hh
+++ b/src/systemc/ext/channel/sc_inout_rv.hh
@@ -36,7 +36,6 @@
 #include "sc_signal_in_if.hh"
 #include "sc_signal_inout_if.hh"
 #include "sc_signal_rv.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_dt
 {
diff --git a/src/systemc/ext/channel/sc_out.hh b/src/systemc/ext/channel/sc_out.hh
index 37e9a59829..c78c0b7e40 100644
--- a/src/systemc/ext/channel/sc_out.hh
+++ b/src/systemc/ext/channel/sc_out.hh
@@ -32,7 +32,6 @@
 
 #include "../core/sc_port.hh"
 #include "sc_inout.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_core
 {
diff --git a/src/systemc/ext/channel/sc_out_resolved.hh b/src/systemc/ext/channel/sc_out_resolved.hh
index 25f923431b..820728e15c 100644
--- a/src/systemc/ext/channel/sc_out_resolved.hh
+++ b/src/systemc/ext/channel/sc_out_resolved.hh
@@ -34,7 +34,6 @@
 #include "sc_out.hh"
 #include "sc_signal_in_if.hh"
 #include "sc_signal_inout_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_dt
 {
diff --git a/src/systemc/ext/channel/sc_out_rv.hh b/src/systemc/ext/channel/sc_out_rv.hh
index ace1f05c5e..3afe3ee7c4 100644
--- a/src/systemc/ext/channel/sc_out_rv.hh
+++ b/src/systemc/ext/channel/sc_out_rv.hh
@@ -34,7 +34,6 @@
 #include "sc_inout_rv.hh"
 #include "sc_signal_in_if.hh"
 #include "sc_signal_inout_if.hh"
-#include "warn_unimpl.hh"
 
 namespace sc_dt
 {