use sleep rather than usleep
diff --git a/shell/hush_test/hush-vars/param_subshell.tests b/shell/hush_test/hush-vars/param_subshell.tests
index 6beaeae..565a845 100755
--- a/shell/hush_test/hush-vars/param_subshell.tests
+++ b/shell/hush_test/hush-vars/param_subshell.tests
@@ -5,9 +5,11 @@
echo 1=$1
{ echo 2=$2; }
{ echo 3=$3; } &
-usleep 100000
+# cant use usleep as it isnt standard in $PATH --
+# we fail when testing busybox compiled solely as "hush"
+sleep 1
( echo 4=$4 )
( echo 5=$5 ) &
-usleep 100000
+sleep 1
true | echo 6=$6 | cat
true | { echo 7=$7; } | cat