diff -u fglrx-installer-8.721/debian/fglrx.preinst fglrx-installer-8.721/debian/fglrx.preinst
--- fglrx-installer-8.721/debian/fglrx.preinst
+++ fglrx-installer-8.721/debian/fglrx.preinst
@@ -73,7 +73,7 @@
      done
 
     #before 8.699 we had to divert libdri
-    dpkg-divert --remove --rename --package $PKGNAME \
+    dpkg-divert --remove --rename --package xorg-driver-fglrx \
         --divert /usr/lib/fglrx/libdri.so.xlibmesa   \
         /usr/lib/xorg/modules/extensions/libdri.so > /dev/null
 
diff -u fglrx-installer-8.721/debian/changelog fglrx-installer-8.721/debian/changelog
--- fglrx-installer-8.721/debian/changelog
+++ fglrx-installer-8.721/debian/changelog
@@ -1,3 +1,12 @@
+fglrx-installer (2:8.721-0ubuntu8) UNRELEASED; urgency=low
+
+  * debian/fglrx.postinst: the old /usr/lib/xorg/modules/extensions/libdri.so
+    diversion belonged to xorg-driver-fglrx, not to fglrx; xorg-driver-fglrx
+    is now a dummy package so we still need to handle this here, but pass
+    --package xorg-driver-fglrx instead of --package fglrx.  LP: #552782.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Thu, 08 Apr 2010 13:49:11 +0000
+
 fglrx-installer (2:8.721-0ubuntu7) lucid; urgency=low
 
   * debian/control: