diff --git a/s4-funcs.sh b/s4-funcs.sh
index 016b65e..a9b616e 100755
--- a/s4-funcs.sh
+++ b/s4-funcs.sh
@@ -352,7 +352,9 @@
   rm $sqi
 }
 cleanup2() {	# Dirty workaround for produced zombie processes
-  pkill -9 -u `id -u` -P 1
+  if [ -z "$TTY" ]; then	# When called in daemon environment
+    pkill -9 -u `id -u` -P 1
+  fi
 }
 cleanup() {
   trap '' INT HUP EXIT TERM PIPE