diff --git a/debian/mount.preinst b/debian/mount.preinst
index a0dd43c..2910362 100644
--- a/debian/mount.preinst
+++ b/debian/mount.preinst
@@ -17,25 +17,22 @@ case "$1" in
 	;;
 
     upgrade)
-	version=$2
-	DISTRO=$(lsb_release -is 2>/dev/null || echo Debian);
-
-	if [ Debian = "$DISTRO" ]; then
-	  if [ -f /proc/mounts ] && ! chrooted; then
-	      NFS_IN_USE=$(sed -n '/^[^ ]* [^ ]* nfs /p' /proc/mounts)
-	  else
-	      NFS_IN_USE=""
-	  fi
-	  if [ -n "$NFS_IN_USE" ] && [ ! -x /sbin/mount.nfs ] ; then
-	      cat << EOF
+#DEBIAN_ONLY_BEGIN#
+	if [ -f /proc/mounts ] && ! chrooted; then
+	    NFS_IN_USE=$(sed -n '/^[^ ]* [^ ]* nfs /p' /proc/mounts)
+	else
+	    NFS_IN_USE=""
+	fi
+	if [ -n "$NFS_IN_USE" ] && [ ! -x /sbin/mount.nfs ] ; then
+	    cat << EOF
 You have NFS mount points currently mounted, and this version of mount
 requires that nfs-common be upgraded before NFS mounts will work.
 
 Aborting install.
 EOF
-	      exit 1
-	  fi
+	    exit 1
 	fi
+#DEBIAN_ONLY_END#
 
 	;;
 
diff --git a/debian/rules b/debian/rules
index c8239cd..f771e5f 100755
--- a/debian/rules
+++ b/debian/rules
@@ -164,6 +164,11 @@ binary-arch: build install
 	[ -n "$(STRIP)" ] || dh_strip -s
 	dh_makeshlibs -s
 	dh_installdeb -s
+ifeq ($(DISTRO),Debian)
+	sed -i '/^#DEBIAN_ONLY_/d' debian/mount/DEBIAN/preinst
+else
+	sed -i '/^#DEBIAN_ONLY_BEGIN#/,/^#DEBIAN_ONLY_END#/d' debian/mount/DEBIAN/preinst
+endif
 	dh_shlibdeps -s
 ifeq ($(DEB_HOST_ARCH_OS),hurd)
 	echo util-linux:Conflicts=getty >> debian/util-linux.substvars