diff --git a/Shorewall-core/shorewallrc.apple b/Shorewall-core/shorewallrc.apple
index eb422a4ff..a6df47df2 100644
--- a/Shorewall-core/shorewallrc.apple
+++ b/Shorewall-core/shorewallrc.apple
@@ -14,7 +14,7 @@ INITDIR=                               #Unused on OS X
 INITFILE=                              #Unused on OS X
 INITSOURCE=                            #Unused on OS X
 ANNOTATED=                             #Unused on OS X
-SYSTEMDDIR=                            #Unused on OS X
+SERVICEDIR=                            #Unused on OS X
 SERVICEFILE=                           #Unused on OS X
 SYSCONFDIR=                            #Unused on OS X
 SPARSE=Yes                             #Only install $PRODUCT/$PRODUCT.conf in $CONFDIR.
diff --git a/Shorewall-core/shorewallrc.archlinux b/Shorewall-core/shorewallrc.archlinux
index dd1375d80..947d3ef69 100644
--- a/Shorewall-core/shorewallrc.archlinux
+++ b/Shorewall-core/shorewallrc.archlinux
@@ -15,7 +15,7 @@ INITFILE=                              #Name of the product's installed SysV ini
 INITSOURCE=                            #Name of the distributed file to be installed as the SysV init script
 ANNOTATED=                             #If non-zero, annotated configuration files are installed
 SYSCONFDIR=                            #Directory where SysV init parameter files are installed
-SYSTEMDDIR=/usr/lib/systemd/system     #Directory where .service files are installed (systems running systemd only)
+SERVICEDIR=/usr/lib/systemd/system     #Directory where .service files are installed (systems running systemd only)
 SERVICEFILE=                           #Name of the file to install in $SYSTEMD. Default is $PRODUCT.service
 SPARSE=                                #If non-empty, only install $PRODUCT/$PRODUCT.conf in $CONFDIR
 VARLIB=/var/lib                        #Directory where product variable data is stored.
diff --git a/Shorewall-core/shorewallrc.cygwin b/Shorewall-core/shorewallrc.cygwin
index 72994d46e..3af69794a 100644
--- a/Shorewall-core/shorewallrc.cygwin
+++ b/Shorewall-core/shorewallrc.cygwin
@@ -14,7 +14,7 @@ INITDIR=/etc/init.d                   #Unused on Cygwin
 INITFILE=                             #Unused on Cygwin
 INITSOURCE=                           #Unused on Cygwin
 ANNOTATED=                            #Unused on Cygwin
-SYSTEMDDIR=                           #Unused on Cygwin
+SERVICEDIR=                           #Unused on Cygwin
 SERVICEFILE=                          #Unused on Cygwin
 SYSCONFDIR=                           #Unused on Cygwin
 SPARSE=Yes                            #Only install $PRODUCT/$PRODUCT.conf in $CONFDIR.
diff --git a/Shorewall-core/shorewallrc.debian b/Shorewall-core/shorewallrc.debian
index 345aff337..209096891 100644
--- a/Shorewall-core/shorewallrc.debian
+++ b/Shorewall-core/shorewallrc.debian
@@ -17,7 +17,7 @@ ANNOTATED=                              #If non-zero, annotated configuration fi
 SYSCONFFILE=default.debian              #Name of the distributed file to be installed in $SYSCONFDIR
 SERVICEFILE=                      	#Name of the file to install in $SYSTEMD. Default is $PRODUCT.service
 SYSCONFDIR=/etc/default                 #Directory where SysV init parameter files are installed
-SYSTEMDDIR=                             #Directory where .service files are installed (systems running systemd only)
+SERVICEDIR=                             #Directory where .service files are installed (systems running systemd only)
 SPARSE=Yes                              #If non-empty, only install $PRODUCT/$PRODUCT.conf in $CONFDIR
 VARLIB=/var/lib                         #Directory where product variable data is stored.
 VARDIR=${VARLIB}/$PRODUCT               #Directory where product variable data is stored.
diff --git a/Shorewall-core/shorewallrc.default b/Shorewall-core/shorewallrc.default
index 5f875bad0..f8cfcf89f 100644
--- a/Shorewall-core/shorewallrc.default
+++ b/Shorewall-core/shorewallrc.default
@@ -14,7 +14,7 @@ INITDIR=/etc/init.d                     #Directory where SysV init scripts are i
 INITFILE=$PRODUCT                       #Name of the product's installed SysV init script
 INITSOURCE=init.sh                      #Name of the distributed file to be installed as the SysV init script
 ANNOTATED=                              #If non-zero, annotated configuration files are installed
-SYSTEMDDIR=                             #Directory where .service files are installed (systems running systemd only)
+SERVICEDIR=                             #Directory where .service files are installed (systems running systemd only)
 SERVICEFILE=                            #Name of the file to install in $SYSTEMD. Default is $PRODUCT.service
 SYSCONFFILE=                            #Name of the distributed file to be installed in $SYSCONFDIR
 SYSCONFDIR=                             #Directory where SysV init parameter files are installed
diff --git a/Shorewall-core/shorewallrc.redhat b/Shorewall-core/shorewallrc.redhat
index dfc8d1189..d0ac7cc28 100644
--- a/Shorewall-core/shorewallrc.redhat
+++ b/Shorewall-core/shorewallrc.redhat
@@ -14,7 +14,7 @@ INITDIR=/etc/rc.d/init.d                #Directory where SysV init scripts are i
 INITFILE=$PRODUCT                       #Name of the product's installed SysV init script
 INITSOURCE=init.fedora.sh               #Name of the distributed file to be installed as the SysV init script
 ANNOTATED=                              #If non-zero, annotated configuration files are installed
-SYSTEMDDIR=/lib/systemd/system          #Directory where .service files are installed (systems running systemd only)
+SERVICEDIR=/lib/systemd/system          #Directory where .service files are installed (systems running systemd only)
 SYSCONFFILE=sysconfig                   #Name of the distributed file to be installed as $SYSCONFDIR/$PRODUCT
 SERVICEFILE=                      	#Name of the file to install in $SYSTEMD. Default is $PRODUCT.service
 SYSCONFDIR=/etc/sysconfig/              #Directory where SysV init parameter files are installed
diff --git a/Shorewall-core/shorewallrc.slackware b/Shorewall-core/shorewallrc.slackware
index 4a9a0b0b9..c7f072e38 100644
--- a/Shorewall-core/shorewallrc.slackware
+++ b/Shorewall-core/shorewallrc.slackware
@@ -15,7 +15,7 @@ AUXINITSOURCE=init.slackware.firewall.sh   #Name of the distributed file to be i
 AUXINITFILE=rc.firewall                    #Name of the product's installed SysV init script
 INITSOURCE=init.slackware.$PRODUCT.sh      #Name of the distributed file to be installed as a second SysV init script
 INITFILE=rc.$PRODUCT                       #Name of the product's installed second init script
-SYSTEMDDIR=                                #Name of the directory where .service files are installed (systems running systemd only)
+SERVICEDIR=                                #Name of the directory where .service files are installed (systems running systemd only)
 SERVICEFILE=                               #Name of the file to install in $SYSTEMD. Default is $PRODUCT.service
 SYSCONFFILE=                               #Name of the distributed file to be installed in $SYSCONFDIR
 SYSCONFDIR=                                #Name of the directory where SysV init parameter files are installed.
diff --git a/Shorewall-core/shorewallrc.suse b/Shorewall-core/shorewallrc.suse
index 54f35e69a..436409dfa 100644
--- a/Shorewall-core/shorewallrc.suse
+++ b/Shorewall-core/shorewallrc.suse
@@ -14,7 +14,7 @@ INITDIR=/etc/init.d                                   #Directory where SysV init
 INITFILE=$PRODUCT                                     #Name of the product's SysV init script
 INITSOURCE=init.suse.sh                               #Name of the distributed file to be installed as the SysV init script
 ANNOTATED=                                            #If non-zero, annotated configuration files are installed
-SYSTEMDDIR=                                           #Directory where .service files are installed (systems running systemd only)
+SERVICEDIR=                                           #Directory where .service files are installed (systems running systemd only)
 SERVICEFILE=                      		      #Name of the file to install in $SYSTEMD. Default is $PRODUCT.service
 SYSCONFFILE=sysconfig                                 #Name of the distributed file to be installed in $SYSCONFDIR
 SYSCONFDIR=/etc/sysconfig/                            #Directory where SysV init parameter files are installed