diff --git a/libnss.spec b/libnss.spec
index 20989c2..6a4367d 100644
--- a/libnss.spec
+++ b/libnss.spec
@@ -4,7 +4,7 @@
 %define        with_test   1
 %define        with_nsspem 1
 Name:          libnss
-Version:       3.17.4
+Version:       3.18
 Release:       1mamba
 Summary:       Network Security Services
 Group:         System/Libraries
@@ -145,12 +145,13 @@ cat %{SOURCE1} | sed -e "s,%%libdir%%,%{_libdir},g" \
                  -e "s,%%NSPR_VERSION%%,%{nspr_version},g" \
                  -e "s,%%NSS_VERSION%%,%{version},g" > custom_nss.pc
 
-NSS_VMAJOR=`cat mozilla/security/nss/lib/nss/nss.h | \
-   grep "#define.*NSS_VMAJOR" | awk '{print $3}'`
-NSS_VMINOR=`cat mozilla/security/nss/lib/nss/nss.h | \
-   grep "#define.*NSS_VMINOR" | awk '{print $3}'`
-NSS_VPATCH=`cat mozilla/security/nss/lib/nss/nss.h | \
-   grep "#define.*NSS_VPATCH" | awk '{print $3}'`
+%define majver %(echo %version | cut -d. -f1)
+%define minver %(echo %version | cut -d. -f2)
+%define patchver %(echo %version | cut -d. -f3)
+
+NSS_VMAJOR=%majver
+NSS_VMINOR=%minver
+NSS_VPATCH=%patchver
 cat %{SOURCE2} | sed -e "s,@libdir@,%{_libdir},g" \
                  -e "s,@prefix@,%{_prefix},g" \
                  -e "s,@exec_prefix@,%{_prefix},g" \
@@ -303,6 +304,10 @@ fi
 %{_includedir}/nss3/
 
 %changelog
+* Sat Mar 21 2015 Silvan Calarco <silvan.calarco@mambasoft.it> 3.18-1mamba
+- update to 3.18
+- fix version in /usr/bin/nss-config
+
 * Tue Feb 17 2015 Automatic Build System <autodist@mambasoft.it> 3.17.4-1mamba
 - automatic version update by autodist