diff --git a/include/hw/char/serial-isa.h b/include/hw/char/serial-isa.h
new file mode 100644
index 0000000000..4bd01ef45b
--- /dev/null
+++ b/include/hw/char/serial-isa.h
@@ -0,0 +1,50 @@
+/*
+ * QEMU 16550A UART emulation
+ *
+ * Copyright (c) 2003-2004 Fabrice Bellard
+ * Copyright (c) 2008 Citrix Systems, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef HW_SERIAL_ISA_H
+#define HW_SERIAL_ISA_H
+
+#include "serial.h"
+
+#include "hw/isa/isa.h"
+#include "qom/object.h"
+
+#define TYPE_ISA_SERIAL "isa-serial"
+OBJECT_DECLARE_SIMPLE_TYPE(ISASerialState, ISA_SERIAL)
+
+struct ISASerialState {
+    ISADevice parent_obj;
+
+    uint32_t index;
+    uint32_t iobase;
+    uint32_t isairq;
+    SerialState state;
+};
+
+#define MAX_ISA_SERIAL_PORTS 4
+
+void serial_hds_isa_init(ISABus *bus, int from, int to);
+
+#endif /* HW_SERIAL_ISA_H */
diff --git a/include/hw/char/serial.h b/include/hw/char/serial.h
index 8ba7eca3d6..fca32a532b 100644
--- a/include/hw/char/serial.h
+++ b/include/hw/char/serial.h
@@ -106,11 +106,4 @@ SerialMM *serial_mm_init(MemoryRegion *address_space,
                          qemu_irq irq, int baudbase,
                          Chardev *chr, enum device_endian end);
 
-/* serial-isa.c */
-
-#define MAX_ISA_SERIAL_PORTS 4
-
-#define TYPE_ISA_SERIAL "isa-serial"
-void serial_hds_isa_init(ISABus *bus, int from, int to);
-
 #endif
diff --git a/hw/char/serial-isa.c b/hw/char/serial-isa.c
index 141a6cb168..315982efb5 100644
--- a/hw/char/serial-isa.c
+++ b/hw/char/serial-isa.c
@@ -28,23 +28,11 @@
 #include "qemu/module.h"
 #include "sysemu/sysemu.h"
 #include "hw/acpi/acpi_aml_interface.h"
-#include "hw/char/serial.h"
-#include "hw/isa/isa.h"
+#include "hw/char/serial-isa.h"
 #include "hw/qdev-properties.h"
 #include "migration/vmstate.h"
 #include "qom/object.h"
 
-OBJECT_DECLARE_SIMPLE_TYPE(ISASerialState, ISA_SERIAL)
-
-struct ISASerialState {
-    ISADevice parent_obj;
-
-    uint32_t index;
-    uint32_t iobase;
-    uint32_t isairq;
-    SerialState state;
-};
-
 static const int isa_serial_io[MAX_ISA_SERIAL_PORTS] = {
     0x3f8, 0x2f8, 0x3e8, 0x2e8
 };
diff --git a/hw/i386/microvm-dt.c b/hw/i386/microvm-dt.c
index b3049e4f9f..fc5db6ed7f 100644
--- a/hw/i386/microvm-dt.c
+++ b/hw/i386/microvm-dt.c
@@ -34,7 +34,7 @@
 #include "qemu/cutils.h"
 #include "qapi/error.h"
 #include "sysemu/device_tree.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/i386/fw_cfg.h"
 #include "hw/rtc/mc146818rtc.h"
 #include "hw/sysbus.h"
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index ca55aecc3b..a39d382367 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -39,7 +39,7 @@
 #include "hw/intc/i8259.h"
 #include "hw/timer/i8254.h"
 #include "hw/rtc/mc146818rtc.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/display/ramfb.h"
 #include "hw/i386/topology.h"
 #include "hw/i386/e820_memory_layout.h"
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index a8051feacd..1ddfcefbe4 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -27,7 +27,7 @@
 #include "hw/i386/pc.h"
 #include "hw/block/fdc.h"
 #include "hw/block/fdc-isa.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/char/parallel.h"
 #include "hw/hyperv/hv-balloon.h"
 #include "hw/i386/fw_cfg.h"
diff --git a/hw/isa/isa-superio.c b/hw/isa/isa-superio.c
index 99d2aa491b..74162f26be 100644
--- a/hw/isa/isa-superio.c
+++ b/hw/isa/isa-superio.c
@@ -23,7 +23,7 @@
 #include "hw/qdev-properties.h"
 #include "hw/input/i8042.h"
 #include "hw/char/parallel-isa.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "trace.h"
 
 static void isa_superio_realize(DeviceState *dev, Error **errp)
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 0297871bdd..78a33832d3 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -54,7 +54,7 @@
 #include "hw/ppc/pnv_pnor.h"
 
 #include "hw/isa/isa.h"
-#include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/rtc/mc146818rtc.h"
 
 #include <libfdt.h>
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 0d7b539ace..2f0aebfb29 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -35,6 +35,7 @@
 #include "hw/qdev-properties.h"
 #include "hw/pci-host/sabre.h"
 #include "hw/char/serial.h"
+#include "hw/char/serial-isa.h"
 #include "hw/char/parallel-isa.h"
 #include "hw/rtc/m48t59.h"
 #include "migration/vmstate.h"
