diff --git a/CMakeLists.txt b/CMakeLists.txt
index fdf735aae..84b45a7ae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -104,8 +104,10 @@ if(ENABLE_TESTING)
     )
 
   ADD_CUSTOM_TARGET(memcheck
+    COMMAND sed -i.bak s+/usr/bin/valgrind+`which valgrind`+ DartConfiguration.tcl
     COMMAND ctest -O memcheck.log -D ExperimentalMemCheck
     COMMAND tail -n1 memcheck.log | grep 'Memory checking results:' > /dev/null
     COMMAND rm -f memcheck.log
+    COMMAND mv DartConfiguration.tcl.bak DartConfiguration.tcl
     )
 endif()
diff --git a/tests/compat.sh b/tests/compat.sh
index f451299be..8e0fa4fea 100755
--- a/tests/compat.sh
+++ b/tests/compat.sh
@@ -56,16 +56,16 @@ 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() {
@@ -166,7 +166,7 @@ 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/ $//'
 }
 
 # OpenSSL 1.0.1h with -Verify wants a ClientCertificate message even for
@@ -923,9 +923,9 @@ 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 ' '
 
     # should we skip?
     if [ "X$SKIP_NEXT" = "XYES" ]; then
@@ -1201,9 +1201,9 @@ 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/scripts/all.sh b/tests/scripts/all.sh
index 38ea62870..14cd9cfdf 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -44,7 +44,7 @@ cleanup()
 {
     make clean
 
-    find -iname '*cmake*' -not -name CMakeLists.txt -exec rm -rf {} \+
+    find . -iname '*cmake*' -not -name CMakeLists.txt -exec rm -rf {} \+
     rm -f include/Makefile include/polarssl/Makefile programs/*/Makefile
     git update-index --no-skip-worktree Makefile library/Makefile programs/Makefile tests/Makefile
     git checkout -- Makefile library/Makefile programs/Makefile tests/Makefile
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index b594c3e23..f8c536d5e 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -35,10 +35,10 @@ 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() {
@@ -145,10 +145,10 @@ needs_more_time() {
 
 # 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 ))
 }
@@ -229,9 +229,11 @@ wait_server_start() {
 
         # make a tight loop, server usually takes less than 1 sec to start
         if [ "$DTLS" -eq 1 ]; then
-            until lsof -nbi UDP:"$SRV_PORT" | grep UDP >/dev/null; do :; done
+            until lsof -nbi UDP:"$SRV_PORT" 2>/dev/null | grep UDP >/dev/null;
+            do :; done
         else
-            until lsof -nbi TCP:"$SRV_PORT" | grep LISTEN >/dev/null; do :; done
+            until lsof -nbi TCP:"$SRV_PORT" 2>/dev/null | grep LISTEN >/dev/null;
+            do :; done
         fi
 
         kill $DOG_PID >/dev/null 2>&1
@@ -2782,9 +2784,9 @@ run_test    "DTLS proxy: 3d, gnutls server, fragmentation, nbio" \
 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))"