diff --git a/hw/xfree86/os-support/shared/posix_tty.c b/hw/xfree86/os-support/shared/posix_tty.c
index 0cb9788cc..50f88cdc9 100644
--- a/hw/xfree86/os-support/shared/posix_tty.c
+++ b/hw/xfree86/os-support/shared/posix_tty.c
@@ -411,16 +411,6 @@ xf86WaitForInput(int fd, int timeout)
     return r;
 }
 
-int
-xf86SerialSendBreak(int fd, int duration)
-{
-    int r;
-
-    SYSCALL(r = tcsendbreak(fd, duration));
-    return r;
-
-}
-
 int
 xf86FlushInput(int fd)
 {
diff --git a/hw/xfree86/os-support/xf86_OSproc.h b/hw/xfree86/os-support/xf86_OSproc.h
index 88a1ee98a..8d61d8208 100644
--- a/hw/xfree86/os-support/xf86_OSproc.h
+++ b/hw/xfree86/os-support/xf86_OSproc.h
@@ -129,7 +129,6 @@ extern _X_EXPORT int xf86WriteSerial(int fd, const void *buf, int count);
 extern _X_EXPORT int xf86CloseSerial(int fd);
 extern _X_EXPORT int xf86FlushInput(int fd);
 extern _X_EXPORT int xf86WaitForInput(int fd, int timeout);
-extern _X_EXPORT int xf86SerialSendBreak(int fd, int duration);
 extern _X_EXPORT int xf86SetSerialModemState(int fd, int state);
 extern _X_EXPORT int xf86GetSerialModemState(int fd);
 extern _X_EXPORT int xf86SerialModemSetBits(int fd, int bits);