diff --git a/runlevels.BSD/Makefile b/runlevels.BSD/Makefile
index 6c47cc7f..45285b51 100644
--- a/runlevels.BSD/Makefile
+++ b/runlevels.BSD/Makefile
@@ -1,21 +1,7 @@
 BOOTLEVEL = net.lo0 sysctl syscons
 DEFAULT = 
 
-LEVELDIR = $(DESTDIR)/etc/runlevels
-BOOTDIR = $(LEVELDIR)/boot
-DEFAULTDIR = $(LEVELDIR)/default
-
-install:
-	if ! test -d "$(BOOTDIR)" ; then \
-		$(INSTALL) -d $(BOOTDIR) || exit $$?; \
-		for x in $(BOOT); do ln -snf ../../init.d/"$$x" $(BOOTDIR)/"$$x" || exit $$? ; done \
-	fi
-	if ! test -d "$(DEFAULTDIR)" ; then \
-		$(INSTALL) -d $(DEFAULTDIR) || exit $$?; \
-		for x in $(DEFAULT); do ln -snf ../../init.d/"$$x" $(DEFAULTDIR)/"$$x" || exit $$? ; done \
-	fi
-
-all:
-clean:
+TOPDIR = ..
+include $(TOPDIR)/runlevels.mk
 
 # vim: set ts=4 :
diff --git a/runlevels.Linux/Makefile b/runlevels.Linux/Makefile
index f3ccc551..4a73e7b9 100644
--- a/runlevels.Linux/Makefile
+++ b/runlevels.Linux/Makefile
@@ -1,21 +1,7 @@
 BOOT = consolefont keymaps modules net.lo
 DEFAULT = hdparm
 
-LEVELDIR = $(DESTDIR)/etc/runlevels
-BOOTDIR = $(LEVELDIR)/boot
-DEFAULTDIR = $(LEVELDIR)/default
-
-install:
-	if ! test -d "$(BOOTDIR)" ; then \
-		$(INSTALL) -d $(BOOTDIR) || exit $$?; \
-		for x in $(BOOT); do ln -snf ../../init.d/"$$x" $(BOOTDIR)/"$$x" || exit $$? ; done \
-	fi
-	if ! test -d "$(DEFAULTDIR)" ; then \
-		$(INSTALL) -d $(DEFAULTDIR) || exit $$?; \
-		for x in $(DEFAULT); do ln -snf ../../init.d/"$$x" $(DEFAULTDIR)/"$$x" || exit $$? ; done \
-	fi
-
-all:
-clean:
+TOPDIR = ..
+include $(TOPDIR)/runlevels.mk
 
 # vim: set ts=4 :
diff --git a/runlevels.mk b/runlevels.mk
new file mode 100644
index 00000000..cad2ff7e
--- /dev/null
+++ b/runlevels.mk
@@ -0,0 +1,18 @@
+# Handy runlevel stuff
+
+LEVELDIR = $(DESTDIR)/etc/runlevels
+BOOTDIR = $(LEVELDIR)/boot
+DEFAULTDIR = $(LEVELDIR)/default
+
+install:
+	if ! test -d "$(BOOTDIR)" ; then \
+		$(INSTALL) -d $(BOOTDIR) || exit $$?; \
+		for x in $(BOOT); do ln -snf ../../init.d/"$$x" $(BOOTDIR)/"$$x" || exit $$? ; done \
+	fi
+	if ! test -d "$(DEFAULTDIR)" ; then \
+		$(INSTALL) -d $(DEFAULTDIR) || exit $$?; \
+		for x in $(DEFAULT); do ln -snf ../../init.d/"$$x" $(DEFAULTDIR)/"$$x" || exit $$? ; done \
+	fi
+
+all:
+clean:
diff --git a/runlevels/Makefile b/runlevels/Makefile
index f57eae02..feb7e452 100644
--- a/runlevels/Makefile
+++ b/runlevels/Makefile
@@ -1,21 +1,11 @@
-BOOT = bootmisc checkroot checkfs clock hostname localmount rmnologin urandom
+BOOT = bootmisc checkroot checkfs clock hostname localmount rmnologin sysctl urandom
 DEFAULT = local netmount
 
 LEVELDIR = $(DESTDIR)/etc/runlevels
 BOOTDIR = $(LEVELDIR)/boot
 DEFAULTDIR = $(LEVELDIR)/default
 
-install:
-	if ! test -d "$(BOOTDIR)" ; then \
-		$(INSTALL) -d $(BOOTDIR) || exit $$?; \
-		for x in $(BOOT); do ln -snf ../../init.d/"$$x" $(BOOTDIR)/"$$x" || exit $$? ; done \
-	fi
-	if ! test -d "$(DEFAULTDIR)" ; then \
-		$(INSTALL) -d $(DEFAULTDIR) || exit $$?; \
-		for x in $(DEFAULT); do ln -snf ../../init.d/"$$x" $(DEFAULTDIR)/"$$x" || exit $$? ; done \
-	fi
-
-all:
-clean:
+TOPDIR = ..
+include $(TOPDIR)/runlevels.mk
 
 # vim: set ts=4 :