diff --git a/src/proto/os_win32.pro b/src/proto/os_win32.pro
index 2128807..2fa6e10 100644
--- a/src/proto/os_win32.pro
+++ b/src/proto/os_win32.pro
@@ -43,6 +43,7 @@
 void mch_start_job(char *cmd, job_T *job);
 char *mch_job_status(job_T *job);
 int mch_stop_job(job_T *job, char_u *how);
+void mch_clear_job(job_T *job);
 void mch_set_normal_colors(void);
 void mch_write(char_u *s, int len);
 void mch_delay(long msec, int ignoreinput);