diff --git a/hw/dmx/doc/dmx.xml b/hw/dmx/doc/dmx.xml
index 793aacea0..6d7df4133 100644
--- a/hw/dmx/doc/dmx.xml
+++ b/hw/dmx/doc/dmx.xml
@@ -1214,14 +1214,6 @@ function pointers from the other layer are stored in a screen private
 area.  Common functions to wrap are CloseScreen() and SaveScreen().
 </para></listitem></varlistentry>
 
-<varlistentry>
-<term>miInitializeBackingStore()</term>
-<listitem>
-<para>This MI function initializes the
-screen's backing storage functions, which are used to save areas of
-windows that are currently covered by other windows.
-</para></listitem></varlistentry>
-
 <varlistentry>
 <term>miDCInitialize()</term>
 <listitem>
@@ -1320,8 +1312,8 @@ initialize each of its screens.
 <para>Xnest's ScreenInit() function is called
 xnestOpenScreen().  This function initializes its screen's depth and
 visual information, and then calls miScreenInit() to set up the default
-screen functions.  It then calls miInitializeBackingStore() and
-miDCInitialize() to initialize backing store and the software cursor.
+screen functions.  It then calls miDCInitialize() to initialize the
+software cursor.
 Finally, it replaces many of the screen functions with its own
 functions that repackage and send the requests to the real X server to
 which Xnest is attached.
diff --git a/hw/xfree86/doc/ddxDesign.xml b/hw/xfree86/doc/ddxDesign.xml
index 4c2ca47da..7c2c20ff3 100644
--- a/hw/xfree86/doc/ddxDesign.xml
+++ b/hw/xfree86/doc/ddxDesign.xml
@@ -3560,13 +3560,6 @@ The following include files are typically required by video drivers:
 	      </filename></literallayout>
 	  </para>
 
-	  <para>
-  All drivers implementing backing store need this:
-	    <literallayout><filename>
-    "mibstore.h"
-	      </filename></literallayout>
-	  </para>
-
 	  <para>
   All drivers using the mi colourmap code need this:
 	    <literallayout><filename>
@@ -8091,13 +8084,6 @@ visible symbols.
 	  </filename></literallayout>
       </para>
 
-      <para>
-  All drivers implementing backing store need this:
-	<literallayout><filename>
-    "mibstore.h"
-	  </filename></literallayout>
-      </para>
-
       <para>
   All drivers using the mi colourmap code need this:
 	<literallayout><filename>
@@ -9102,12 +9088,6 @@ ZZZScreenInit(ScreenPtr pScreen, int argc, char **argv)
                                      pScrn-&gt;displayWidth, pBankInfo))
         return FALSE;
 
-    /*
-     * If backing store is to be supported (as is usually the case),
-     * initialise it.
-     */
-    miInitializeBackingStore(pScreen);
-
     /*
      * Set initial black &amp; white colourmap indices.
      */