diff --git a/src/os_win32.c b/src/os_win32.c
index 7dc37a1..2594aee 100644
--- a/src/os_win32.c
+++ b/src/os_win32.c
@@ -5384,9 +5384,9 @@
 	{
 	    if (job->jv_channel != NULL && job->jv_channel->ch_anonymous_pipe)
 		job->jv_channel->ch_killing = TRUE;
-	    return TerminateJobObject(job->jv_job_object, 0) ? OK : FAIL;
+	    return TerminateJobObject(job->jv_job_object, -1) ? OK : FAIL;
 	}
-	return terminate_all(job->jv_proc_info.hProcess, 0) ? OK : FAIL;
+	return terminate_all(job->jv_proc_info.hProcess, -1) ? OK : FAIL;
     }
 
     if (!AttachConsole(job->jv_proc_info.dwProcessId))