diff --git a/chardev/char-mux.c b/chardev/char-mux.c
index 200c62a0d0..2675ae0c0a 100644
--- a/chardev/char-mux.c
+++ b/chardev/char-mux.c
@@ -117,7 +117,7 @@ static void mux_print_help(Chardev *chr)
     }
 }
 
-static void mux_chr_send_event(MuxChardev *d, int mux_nr, int event)
+static void mux_chr_send_event(MuxChardev *d, int mux_nr, QEMUChrEvent event)
 {
     CharBackend *be = d->backends[mux_nr];
 
@@ -126,7 +126,7 @@ static void mux_chr_send_event(MuxChardev *d, int mux_nr, int event)
     }
 }
 
-static void mux_chr_be_event(Chardev *chr, int event)
+static void mux_chr_be_event(Chardev *chr, QEMUChrEvent event)
 {
     MuxChardev *d = MUX_CHARDEV(chr);
 
@@ -232,7 +232,7 @@ static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
         }
 }
 
-void mux_chr_send_all_event(Chardev *chr, int event)
+void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event)
 {
     MuxChardev *d = MUX_CHARDEV(chr);
     int i;
diff --git a/chardev/char.c b/chardev/char.c
index 739da1155b..4f598f8175 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -48,7 +48,7 @@ static Object *get_chardevs_root(void)
     return container_get(object_get_root(), "/chardevs");
 }
 
-static void chr_be_event(Chardev *s, int event)
+static void chr_be_event(Chardev *s, QEMUChrEvent event)
 {
     CharBackend *be = s->be;
 
@@ -59,7 +59,7 @@ static void chr_be_event(Chardev *s, int event)
     be->chr_event(be->opaque, event);
 }
 
-void qemu_chr_be_event(Chardev *s, int event)
+void qemu_chr_be_event(Chardev *s, QEMUChrEvent event)
 {
     /* Keep track if the char device is open */
     switch (event) {
diff --git a/include/chardev/char-mux.h b/include/chardev/char-mux.h
index 572cefd517..417fe32eed 100644
--- a/include/chardev/char-mux.h
+++ b/include/chardev/char-mux.h
@@ -56,6 +56,6 @@ typedef struct MuxChardev {
     object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
 
 void mux_set_focus(Chardev *chr, int focus);
-void mux_chr_send_all_event(Chardev *chr, int event);
+void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event);
 
 #endif /* CHAR_MUX_H */
diff --git a/include/chardev/char.h b/include/chardev/char.h
index 087b202b62..00589a6025 100644
--- a/include/chardev/char.h
+++ b/include/chardev/char.h
@@ -210,7 +210,7 @@ void qemu_chr_be_update_read_handlers(Chardev *s,
  *
  * Send an event from the back end to the front end.
  */
-void qemu_chr_be_event(Chardev *s, int event);
+void qemu_chr_be_event(Chardev *s, QEMUChrEvent event);
 
 int qemu_chr_add_client(Chardev *s, int fd);
 Chardev *qemu_chr_find(const char *name);
@@ -273,7 +273,7 @@ typedef struct ChardevClass {
     void (*chr_accept_input)(Chardev *chr);
     void (*chr_set_echo)(Chardev *chr, bool echo);
     void (*chr_set_fe_open)(Chardev *chr, int fe_open);
-    void (*chr_be_event)(Chardev *s, int event);
+    void (*chr_be_event)(Chardev *s, QEMUChrEvent event);
     /* Return 0 if succeeded, 1 if failed */
     int (*chr_machine_done)(Chardev *chr);
 } ChardevClass;