diff --git a/func/runtest.sh b/func/runtest.sh
index 3799e99..8785d61 100644
--- a/func/runtest.sh
+++ b/func/runtest.sh
@@ -46,8 +46,10 @@ rlJournalStart
         TT=`mktemp`
         TEXT=sometihngverylong
         rlRun "${SH_BIN} -c 'echo $TEXT > $TT; cat $TT |grep -q $TEXT'" 0 "Checking redirecting to file"
-        rlRun " ${SH_BIN} -c 'let a=1+1;echo \$a|grep -q 2'" 0 "Checking 'let' arithmetic operation 1+1"
-        rlRun "${SH_BIN} $ZSH_OPT -c 'sleep 100 & jobs > jobs.out; WC=\$(cat jobs.out|wc -l); [[ \$WC -ge 1 ]]'" 0 \
+        if [ $SH_BIN != "dash" ]; then
+            rlRun " ${SH_BIN} -c 'let a=1+1;echo \$a|grep -q 2'" 0 "Checking 'let' arithmetic operation 1+1"
+        fi
+        rlRun "${SH_BIN} $ZSH_OPT -c 'sleep 100 & jobs > jobs.out; WC=\$(cat jobs.out|wc -l); [ \$WC -ge 1 ]'" 0 \
                 "Checking process at background is running"
         USER=${SH_BIN}user
         rlRun "adduser -s /bin/${SH_BIN} $USER" 0,9 "Created user with ${SH_BIN} as default shell"