diff --git a/Shorewall-init/install.sh b/Shorewall-init/install.sh
index 4fd41e454..81bca053c 100755
--- a/Shorewall-init/install.sh
+++ b/Shorewall-init/install.sh
@@ -83,7 +83,7 @@ delete_file() # $1 = file to delete
 
 install_file() # $1 = source $2 = target $3 = mode
 {
-    run_install -T $OWNERSHIP -m $3 $1 ${2}
+    run_install $T $OWNERSHIP -m $3 $1 ${2}
 }
 
 #
@@ -132,6 +132,11 @@ PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
 #
 
 case $(uname) in
+    Darwin)
+	[ -z "$OWNER" ] && OWNER=root
+	[ -z "$GROUP" ] && GROUP=wheel
+	T=
+	;;	
     *)
 	[ -z "$OWNER" ] && OWNER=root
 	[ -z "$GROUP" ] && GROUP=root
diff --git a/Shorewall-lite/install.sh b/Shorewall-lite/install.sh
index af88c2de4..8a0bfdaf3 100755
--- a/Shorewall-lite/install.sh
+++ b/Shorewall-lite/install.sh
@@ -82,7 +82,7 @@ delete_file() # $1 = file to delete
 
 install_file() # $1 = source $2 = target $3 = mode
 {
-    run_install -T $OWNERSHIP -m $3 $1 ${2}
+    run_install $T $OWNERSHIP -m $3 $1 ${2}
 }
 
 #
@@ -132,6 +132,7 @@ PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
 DEBIAN=
 CYGWIN=
 INSTALLD='-D'
+T='-T'
 
 case $(uname) in
     CYGWIN*)
@@ -144,7 +145,8 @@ case $(uname) in
 	GROUP=$(id -gn)
 	;;
     Darwin)
-	INSTALLD=
+	INSTALLD='-d'
+	T=
 	;;	   
     *)
 	[ -z "$OWNER" ] && OWNER=root
diff --git a/Shorewall/install.sh b/Shorewall/install.sh
index fc3bd38f8..3cfb44a6d 100755
--- a/Shorewall/install.sh
+++ b/Shorewall/install.sh
@@ -82,7 +82,7 @@ delete_file() # $1 = file to delete
 
 install_file() # $1 = source $2 = target $3 = mode
 {
-    run_install -T $OWNERSHIP -m $3 $1 ${2}
+    run_install $T $OWNERSHIP -m $3 $1 ${2}
 }
 
 #
@@ -94,6 +94,7 @@ install_file() # $1 = source $2 = target $3 = mode
 # ARGS is "yes" if we've already parsed an argument
 #
 ARGS=""
+T="-T"
 
 if [ -z "$DEST" ] ; then
 	DEST="/etc/init.d"
@@ -133,7 +134,8 @@ case $(uname) in
 	[ -z "$OWNER" ] && OWNER=root
 	[ -z "$GROUP" ] && GROUP=wheel
 	MAC=Yes
-	INSTALLD=
+	INSTALLD=-d
+	T=
 	;;	
     *)
 	[ -z "$OWNER" ] && OWNER=root
diff --git a/Shorewall6-lite/install.sh b/Shorewall6-lite/install.sh
index 45455b9fd..d91d26dfa 100755
--- a/Shorewall6-lite/install.sh
+++ b/Shorewall6-lite/install.sh
@@ -82,7 +82,7 @@ delete_file() # $1 = file to delete
 
 install_file() # $1 = source $2 = target $3 = mode
 {
-    run_install -T $OWNERSHIP -m $3 $1 ${2}
+    run_install $T $OWNERSHIP -m $3 $1 ${2}
 }
 
 #
@@ -130,6 +130,7 @@ PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin
 # Determine where to install the firewall script
 #
 INSTALLD='-D'
+T='-T'
 
 case $(uname) in
     CYGWIN*)
@@ -142,7 +143,8 @@ case $(uname) in
 	GROUP=$(id -gn)
 	;;
      Darwin)
-	INSTALLD=
+	INSTALLD='-d'
+	T=
 	;;	   
     *)
 	[ -z "$OWNER" ] && OWNER=root