diff -up mozilla-central/browser/installer/Makefile.in.version mozilla-central/browser/installer/Makefile.in
--- mozilla-central/browser/installer/Makefile.in.version	2010-08-06 03:08:59.000000000 +0200
+++ mozilla-central/browser/installer/Makefile.in	2010-08-30 15:27:40.000000000 +0200
@@ -45,6 +45,8 @@ include $(DEPTH)/config/autoconf.mk
 
 include $(topsrcdir)/config/rules.mk
 
+MOZ_APP_VERSION="__RPM_VERSION_INTERNAL__"
+
 MOZ_PKG_REMOVALS = $(srcdir)/removed-files.in
 
 ifdef MOZ_ENABLE_LIBXUL