diff --git a/bin/tests/system/nsupdate/tests.sh b/bin/tests/system/nsupdate/tests.sh
index ceb5782b6b..2cc2a4ec30 100755
--- a/bin/tests/system/nsupdate/tests.sh
+++ b/bin/tests/system/nsupdate/tests.sh
@@ -244,7 +244,7 @@ n=`expr $n + 1`
 ret=0
 echo_i "check that TYPE=0 update is handled ($n)"
 echo "a0e4280000010000000100000000060001c00c000000fe000000000000" |
-$PERL ../packet.pl -a 10.53.0.1 -p ${PORT} -t tcp > /dev/null
+$PERL ../packet.pl -a 10.53.0.1 -p ${PORT} -t tcp > /dev/null || ret=1
 $DIG $DIGOPTS +tcp version.bind txt ch @10.53.0.1 > dig.out.ns1.$n
 grep "status: NOERROR" dig.out.ns1.$n > /dev/null || ret=1
 [ $ret = 0 ] || { echo_i "failed"; status=1; }
@@ -253,7 +253,7 @@ n=`expr $n + 1`
 ret=0
 echo_i "check that TYPE=0 additional data is handled ($n)"
 echo "a0e4280000010000000000010000060001c00c000000fe000000000000" |
-$PERL ../packet.pl -a 10.53.0.1 -p ${PORT} -t tcp > /dev/null
+$PERL ../packet.pl -a 10.53.0.1 -p ${PORT} -t tcp > /dev/null || ret=1
 $DIG $DIGOPTS +tcp version.bind txt ch @10.53.0.1 > dig.out.ns1.$n
 grep "status: NOERROR" dig.out.ns1.$n > /dev/null || ret=1
 [ $ret = 0 ] || { echo_i "failed"; status=1; }
@@ -262,7 +262,7 @@ n=`expr $n + 1`
 ret=0
 echo_i "check that update to undefined class is handled ($n)"
 echo "a0e4280000010001000000000000060101c00c000000fe000000000000" |
-$PERL ../packet.pl -a 10.53.0.1 -p ${PORT} -t tcp > /dev/null
+$PERL ../packet.pl -a 10.53.0.1 -p ${PORT} -t tcp > /dev/null || ret=1
 $DIG $DIGOPTS +tcp version.bind txt ch @10.53.0.1 > dig.out.ns1.$n
 grep "status: NOERROR" dig.out.ns1.$n > /dev/null || ret=1
 [ $ret = 0 ] || { echo_i "failed"; status=1; }
diff --git a/bin/tests/system/tsig/tests.sh b/bin/tests/system/tsig/tests.sh
index 9f23667a6e..132fd7a24d 100644
--- a/bin/tests/system/tsig/tests.sh
+++ b/bin/tests/system/tsig/tests.sh
@@ -214,7 +214,7 @@ grep "unknown algorithm" keygen.out3 > /dev/null || ret=1
 
 echo_i "check that a 'BADTIME' response with 'QR=0' is handled as a request"
 ret=0
-$PERL ../packet.pl -a 10.53.0.1 -p ${PORT} -t tcp < badtime > /dev/null
+$PERL ../packet.pl -a 10.53.0.1 -p ${PORT} -t tcp < badtime > /dev/null || ret=1
 $DIG -p ${PORT} @10.53.0.1 version.bind txt ch > dig.out.verify || ret=1
 grep "status: NOERROR" dig.out.verify > /dev/null || ret=1
 if [ $ret -eq 1 ] ; then