diff --git a/extras/ChangeLog b/extras/ChangeLog
index 8cf46b6a4f..241a03b17d 100644
--- a/extras/ChangeLog
+++ b/extras/ChangeLog
@@ -1,3 +1,7 @@
+2013-10-16  Ramon Novoa  <rnovoa@artica.es>
+
+	* build_vars.sh: Added arch information.
+
 2013-09-30  Ramon Novoa  <rnovoa@artica.es>
 
 	* pandora_update_version.sh: Updated the name of the server conf file.
diff --git a/extras/build_vars.sh b/extras/build_vars.sh
index 904eee9d27..7c9060b3da 100644
--- a/extras/build_vars.sh
+++ b/extras/build_vars.sh
@@ -5,4 +5,4 @@ PANDHOME_ENT=$CODEHOME_ENT/pandora/trunk
 RPMHOME=/usr/src/packages
 VERSION=$(grep 'my $pandora_version =' $CODEHOME/pandora_server/lib/PandoraFMS/Config.pm | awk '{print substr($4, 2, length($4) - 3)}')
 BUILD=$(grep 'my $pandora_build =' $CODEHOME/pandora_server/lib/PandoraFMS/Config.pm | awk '{print substr($4, 2, length($4) - 3)}')
-KEYGEN_VERSION=$(grep "%define version" $CODEHOME_ENT/updatemanager/keygen/pandora/pandora_keygen.spec | awk '{print $3}')
+X86_64=`uname -m | grep x86_64`