diff --git a/ProcessUNIX.c b/ProcessUNIX.c
index 9c66a44866a93fdfb2502b6efd8d65d932570a99..19922111aa836448ff50fc8ade1e1715f5884e47 100644
--- a/ProcessUNIX.c
+++ b/ProcessUNIX.c
@@ -2732,6 +2732,7 @@ static void kwsysProcessesSignalHandler(int signum
     kwsysProcess* cp = kwsysProcesses.Processes[i];
     kwsysProcess_ssize_t status=
       read(cp->PipeReadEnds[KWSYSPE_PIPE_SIGNAL], &buf, 1);
+    (void)status;
     status=write(cp->SignalPipe, &buf, 1);
     (void)status;
     }