diff --git a/qemu-char.h b/qemu-char.h
index c01e590e54..05d6899f5a 100644
--- a/qemu-char.h
+++ b/qemu-char.h
@@ -29,8 +29,8 @@ typedef struct {
 #define CHR_IOCTL_PP_EPP_WRITE       11
 #define CHR_IOCTL_PP_DATA_DIR        12
 
-#define CHR_IOCTL_SERIAL_SET_TIOCM   12
-#define CHR_IOCTL_SERIAL_GET_TIOCM   13
+#define CHR_IOCTL_SERIAL_SET_TIOCM   13
+#define CHR_IOCTL_SERIAL_GET_TIOCM   14
 
 #define CHR_TIOCM_CTS	0x020
 #define CHR_TIOCM_CAR	0x040