diff --git a/scripts/_utils.sh b/scripts/_utils.sh
index 2bb8996..b2b51bc 100644
--- a/scripts/_utils.sh
+++ b/scripts/_utils.sh
@@ -29,7 +29,7 @@ function utils_find_last_version()
 
 function utils_callcmd()
 {
-  if [[ -v 'VERBOSE' && "$VERBOSE" == '1' ]]
+  if [[ "$VERBOSE" == '1' ]]
     then
       echo "$@"
       if ! "$@"; then
@@ -49,7 +49,7 @@ function utils_callcmd()
 
 function utils_warn_callcmd()
 {
-  if [[ -v 'VERBOSE' && "$VERBOSE" == '1' ]]
+  if [[ "$VERBOSE" == '1' ]]
     then
       echo "$@"
       if ! "$@"; then
@@ -73,7 +73,7 @@ function utils_makecmd()
 {
   local cores
 
-  [[ $(uname) == "OpenBSD" ]] \
+  [[ "$(uname -s)" == 'OpenBSD' || "$(uname -s)" == 'Darwin' ]] \
       && cores=$(sysctl -n hw.ncpu) \
       || cores=$(nproc)
   [[ $(command -v gmake >/dev/null 2>&1) ]] \
diff --git a/scripts/install.sh b/scripts/install.sh
index bf2d8ab..cffaa82 100755
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -158,5 +158,7 @@ then
   rm -rf ../../build
 fi
 
-echo 'Successfully installed sh-elf-vhex !'
-echo "Do not forget to export the binary path '$prefix_install'"
+echo -en \
+  'Successfully installed sh-elf-vhex !\n' \
+  '\rDo not forget to export the binary path' \
+  "'export PATH=\"\$PATH:$prefix_install\"'"