diff -up firefox-7.0/mozilla-beta/config/autoconf.mk.in.old firefox-7.0/mozilla-beta/config/autoconf.mk.in
--- firefox-7.0/mozilla-beta/config/autoconf.mk.in.old	2011-08-31 21:16:06.000000000 +0200
+++ firefox-7.0/mozilla-beta/config/autoconf.mk.in	2011-09-06 12:08:00.859392269 +0200
@@ -68,7 +68,7 @@ datadir		= @datadir@
 mandir		= @mandir@
 idldir		= $(datadir)/idl/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
 
-installdir	= $(libdir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+installdir	= $(libdir)/$(MOZ_APP_NAME)
 sdkdir		= $(libdir)/$(MOZ_APP_NAME)-devel-$(MOZ_APP_VERSION)
 
 DIST		= $(DEPTH)/dist
diff -up firefox-7.0/mozilla-beta/js/src/config/autoconf.mk.in.old firefox-7.0/mozilla-beta/js/src/config/autoconf.mk.in
--- firefox-7.0/mozilla-beta/js/src/config/autoconf.mk.in.old	2011-08-31 21:16:16.000000000 +0200
+++ firefox-7.0/mozilla-beta/js/src/config/autoconf.mk.in	2011-09-06 12:08:39.463500899 +0200
@@ -61,7 +61,7 @@ libdir		= @libdir@
 datadir		= @datadir@
 mandir		= @mandir@
 
-installdir	= $(libdir)/$(MOZ_APP_NAME)-$(MOZ_APP_VERSION)
+installdir	= $(libdir)/$(MOZ_APP_NAME)
 sdkdir		= $(libdir)/$(MOZ_APP_NAME)-devel-$(MOZ_APP_VERSION)
 
 TOP_DIST	= @TOP_DIST@
diff -up firefox-7.0/mozilla-beta/Makefile.in.old firefox-7.0/mozilla-beta/Makefile.in