diff --git a/tek4010 b/tek4010
index d906abc..034e31b 100755
Binary files a/tek4010 and b/tek4010 differ
diff --git a/tube.c b/tube.c
index dc9fdce..c9286a1 100755
--- a/tube.c
+++ b/tube.c
@@ -499,7 +499,7 @@ int tube_on_timer_event()
         // is child process still running?
         
         int status;
-        if (argWait) {
+        if (argWait && (tube_isInput() == 0) && (waitpid(-1, &status, WNOHANG))) {
                 if (firstWait == 0)
                         firstWait = tube_mSeconds();
                 else {