diff --git a/icu.spec b/icu.spec
index 40bb99d..5be6f51 100644
--- a/icu.spec
+++ b/icu.spec
@@ -1,6 +1,6 @@
 Name:      icu
 Version:   50.1.2
-Release:   1%{?dist}
+Release:   2%{?dist}
 Summary:   International Components for Unicode
 Group:     Development/Tools
 License:   MIT and UCD and Public Domain
@@ -82,6 +82,10 @@ sed -i 's|^LIBS =.*|LIBS = -nostdlib -L../../lib -licui18n -licuuc -lpthread -lc
 sed -i 's| \$(docfilesdir)/installdox||' Makefile
 # There is no source/doc/html/search/ directory
 sed -i '/^\s\+\$(INSTALL_DATA) \$(docsrchfiles) \$(DESTDIR)\$(docdir)\/\$(docsubsrchdir)\s*$/d' Makefile
+# rhbz#856594 The configure --disable-renaming and possibly other options
+# result in icu/source/uconfig.h.prepend being created, include that content in
+# icu/source/common/unicode/uconfig.h to propagate to consumer packages.
+sed -e '/^#define __UCONFIG_H__/ r uconfig.h.prepend' -i common/unicode/uconfig.h
 
 make %{?_smp_mflags}
 make %{?_smp_mflags} doc
@@ -159,6 +163,9 @@ make %{?_smp_mflags} -C source check
 %doc source/__docs/%{name}/html/*
 
 %changelog
+* Mon Jan 28 2013 Eike Rathke <erack@redhat.com> - 50.1.2-2
+- Resolves: rhbz#856594 include content of icu/source/uconfig.h.prepend
+
 * Fri Jan 25 2013 Eike Rathke <erack@redhat.com> - 50.1.2-1
 - Update to 50.1.2
 - Resolves: rhbz#856594 to-do add --disable-renaming on next soname bump