diff --git a/rpm-4.11.x-siteconfig.patch b/rpm-4.11.x-siteconfig.patch
index fdbc336..f32f859 100644
--- a/rpm-4.11.x-siteconfig.patch
+++ b/rpm-4.11.x-siteconfig.patch
@@ -5,7 +5,7 @@ diff -up rpm-4.11.1-rc1/macros.in.siteconfig rpm-4.11.1-rc1/macros.in
    export CLASSPATH}\
    PKG_CONFIG_PATH=\"${PKG_CONFIG_PATH}:%{_libdir}/pkgconfig:%{_datadir}/pkgconfig\"\
    export PKG_CONFIG_PATH\
-+  CONFIG_SITE=NONE\
++  CONFIG_SITE=${CONFIG_SITE:-NONE}\
 +  export CONFIG_SITE\
    \
    %{verbose:set -x}%{!verbose:exec > /dev/null}\
diff --git a/rpm.spec b/rpm.spec
index 4aeb671..0e917da 100644
--- a/rpm.spec
+++ b/rpm.spec
@@ -524,6 +524,7 @@ exit 0
 %changelog
 * Tue Dec 03 2013 Panu Matilainen <pmatilai@redhat.com> - 4.11.1-11
 - generate kmod(module.ko) provides for kernel (#1025513)
+- dont override CONFIG_SITE if already set (related to #962837)
 
 * Mon Nov 18 2013 Panu Matilainen <pmatilai@redhat.com> - 4.11.1-10
 - python 3 string and file compatibility fixes