diff --git a/doc/ja/lxc.container.conf.sgml.in b/doc/ja/lxc.container.conf.sgml.in
index f03cc24da..1f6ebcbe8 100644
--- a/doc/ja/lxc.container.conf.sgml.in
+++ b/doc/ja/lxc.container.conf.sgml.in
@@ -1545,24 +1545,6 @@ by KATOH Yasufumi <karma at jazz.email.ne.jp>
           </listitem>
         </varlistentry>
 
-        <varlistentry>
-          <term>
-            <option>lxc.rootfs.backend</option>
-          </term>
-          <listitem>
-            <para>
-              <!--
-              specify the rootfs backend type to use, for instance 'dir' or
-              'zfs'.  While this can be guessed by lxc at container startup,
-              doing so takes time.  Specifying it here avoids extra
-              processing.
-                -->
-              使用するバックエンドのタイプを、例えば 'dir' や 'zfs' のように指定します。
-              コンテナ起動時に LXC が推測できますが、時間がかかります。これを指定すると、余分な処理を避けられます。
-            </para>
-          </listitem>
-        </varlistentry>
-
       </variablelist>
     </refsect2>
 
diff --git a/doc/ko/lxc.container.conf.sgml.in b/doc/ko/lxc.container.conf.sgml.in
index 40e1513c3..d6deb6ccb 100644
--- a/doc/ko/lxc.container.conf.sgml.in
+++ b/doc/ko/lxc.container.conf.sgml.in
@@ -1505,23 +1505,6 @@ proc proc proc nodev,noexec,nosuid 0 0
 	  </listitem>
 	</varlistentry>
 
-        <varlistentry>
-          <term>
-            <option>lxc.rootfs.backend</option>
-          </term>
-          <listitem>
-            <para>
-              <!--
-              specify the rootfs backend type to use, for instance 'dir' or
-              'zfs'.  While this can be guessed by lxc at container startup,
-              doing so takes time.  Specifying it here avoids extra
-              processing.
-              -->
-              사용하고자 하는 백엔드 루트파일 시스템의 종류를 지정한다. 'dir' 또는 'zfs'로 지정할 수 있다. 컨테이너 시작시 어떤 종류인지 추정하는 동안, 시간이 소요될 수 있다. 이 값을 지정함으로써 추가적인 처리를 피할 수 있다.
-            </para>
-          </listitem>
-        </varlistentry>
-
       </variablelist>
     </refsect2>
 
diff --git a/doc/lxc.container.conf.sgml.in b/doc/lxc.container.conf.sgml.in
index 6c832c8b2..4a8e0b9e6 100644
--- a/doc/lxc.container.conf.sgml.in
+++ b/doc/lxc.container.conf.sgml.in
@@ -1099,20 +1099,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
           </listitem>
         </varlistentry>
 
-        <varlistentry>
-          <term>
-            <option>lxc.rootfs.backend</option>
-          </term>
-          <listitem>
-            <para>
-              specify the rootfs backend type to use, for instance 'dir' or
-	      'zfs'.  While this can be guessed by lxc at container startup,
-	      doing so takes time.  Specifying it here avoids extra
-	      processing.
-            </para>
-          </listitem>
-        </varlistentry>
-
       </variablelist>
     </refsect2>