--- configure.orig	2011-04-23 19:57:24.000000000 +0200
+++ configure	2011-04-23 20:27:33.000000000 +0200
@@ -20194,7 +20194,7 @@
 fi
 
 
-MOZILLA_PLUGINDIR="${MOZILLA_PLUGINDIR:="\${libdir}/mozilla/plugins"}"
+MOZILLA_PLUGINDIR="${MOZILLA_PLUGINDIR}"
 
 
  if test x$enable_browser_plugin = xyes; then