diff --git a/tests/compat.sh b/tests/compat.sh
index 861d20e10..260b26f07 100755
--- a/tests/compat.sh
+++ b/tests/compat.sh
@@ -51,16 +51,16 @@ PEERS="OpenSSL$PEER_GNUTLS PolarSSL"
 
 print_usage() {
     echo "Usage: $0"
-    echo -e "  -h|--help\tPrint this help."
-    echo -e "  -f|--filter\tOnly matching ciphersuites are tested (Default: '$FILTER')"
-    echo -e "  -e|--exclude\tMatching ciphersuites are excluded (Default: '$EXCLUDE')"
-    echo -e "  -m|--modes\tWhich modes to perform (Default: '$MODES')"
-    echo -e "  -t|--types\tWhich key exchange type to perform (Default: '$TYPES')"
-    echo -e "  -V|--verify\tWhich verification modes to perform (Default: '$VERIFIES')"
-    echo -e "  -p|--peers\tWhich peers to use (Default: '$PEERS')"
-    echo -e "            \tAlso available: GnuTLS (needs v3.2.15 or higher)"
-    echo -e "  -M|--memcheck\tCheck memory leaks and errors."
-    echo -e "  -v|--verbose\tSet verbose output."
+    printf "  -h|--help\tPrint this help.\n"
+    printf "  -f|--filter\tOnly matching ciphersuites are tested (Default: '$FILTER')\n"
+    printf "  -e|--exclude\tMatching ciphersuites are excluded (Default: '$EXCLUDE')\n"
+    printf "  -m|--modes\tWhich modes to perform (Default: '$MODES')\n"
+    printf "  -t|--types\tWhich key exchange type to perform (Default: '$TYPES')\n"
+    printf "  -V|--verify\tWhich verification modes to perform (Default: '$VERIFIES')\n"
+    printf "  -p|--peers\tWhich peers to use (Default: '$PEERS')\n"
+    printf "            \tAlso available: GnuTLS (needs v3.2.15 or higher)\n"
+    printf "  -M|--memcheck\tCheck memory leaks and errors.\n"
+    printf "  -v|--verbose\tSet verbose output.\n"
 }
 
 get_options() {
@@ -121,7 +121,7 @@ filter()
   done
 
   # normalize whitespace
-  echo "$NEW_LIST" | sed -e 's/[[:space:]]\+/ /g' -e 's/^ //' -e 's/ $//'
+  echo "$NEW_LIST" | sed -e 's/[[:space:]][[:space:]]*/ /g' -e 's/^ //' -e 's/ $//'
 }
 
 filter_ciphersuites()
@@ -834,9 +834,9 @@ run_client() {
     VERIF=$(echo $VERIFY | tr '[:upper:]' '[:lower:]')
     TITLE="`echo $1 | head -c1`->`echo $SERVER_NAME | head -c1`"
     TITLE="$TITLE $MODE,$VERIF $2"
-    echo -n "$TITLE "
+    printf "$TITLE "
     LEN=$(( 72 - `echo "$TITLE" | wc -c` ))
-    for i in `seq 1 $LEN`; do echo -n '.'; done; echo -n ' '
+    for i in `seq 1 $LEN`; do printf '.'; done; printf ' '
 
     # run the command and interpret result
     case $1 in
@@ -1095,9 +1095,9 @@ echo "------------------------------------------------------------------------"
 
 if [ $FAILED -ne 0 -o $SRVMEM -ne 0 ];
 then
-    echo -n "FAILED"
+    printf "FAILED"
 else
-    echo -n "PASSED"
+    printf "PASSED"
 fi
 
 if [ "$MEMCHECK" -gt 0 ]; then
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 4eafed436..f94808d2c 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -34,10 +34,10 @@ EXCLUDE='^$'
 
 print_usage() {
     echo "Usage: $0 [options]"
-    echo -e "  -h|--help\tPrint this help."
-    echo -e "  -m|--memcheck\tCheck memory leaks and errors."
-    echo -e "  -f|--filter\tOnly matching tests are executed (default: '$FILTER')"
-    echo -e "  -e|--exclude\tMatching tests are excluded (default: '$EXCLUDE')"
+    printf "  -h|--help\tPrint this help.\n"
+    printf "  -m|--memcheck\tCheck memory leaks and errors.\n"
+    printf "  -f|--filter\tOnly matching tests are executed (default: '$FILTER')\n"
+    printf "  -e|--exclude\tMatching tests are excluded (default: '$EXCLUDE')\n"
 }
 
 get_options() {
@@ -96,10 +96,10 @@ requires_gnutls() {
 
 # print_name <name>
 print_name() {
-    echo -n "$1 "
+    printf "$1 "
     LEN=$(( 72 - `echo "$1" | wc -c` ))
-    for i in `seq 1 $LEN`; do echo -n '.'; done
-    echo -n ' '
+    for i in `seq 1 $LEN`; do printf '.'; done
+    printf ' '
 
     TESTS=$(( $TESTS + 1 ))
 }
@@ -148,7 +148,8 @@ wait_server_start() {
         WATCHDOG_PID=$!
 
         # make a tight loop, server usually takes less than 1 sec to start
-        until lsof -nbi TCP:"$PORT" | grep LISTEN >/dev/null; do :; done
+        until lsof -nbi TCP:"$PORT" 2>/dev/null | grep LISTEN >/dev/null; 
+        do :; done
 
         kill $WATCHDOG_PID
         wait $WATCHDOG_PID
@@ -1848,9 +1849,9 @@ run_test    "Large packet TLS 1.2 AEAD shorter tag" \
 echo "------------------------------------------------------------------------"
 
 if [ $FAILS = 0 ]; then
-    echo -n "PASSED"
+    printf "PASSED"
 else
-    echo -n "FAILED"
+    printf "FAILED"
 fi
 PASSES=$(( $TESTS - $FAILS ))
 echo " ($PASSES / $TESTS tests ($SKIPS skipped))"