diff --git a/python/pychart/pychart.SlackBuild b/python/pychart/pychart.SlackBuild
index 9e37335344..c0295d5635 100644
--- a/python/pychart/pychart.SlackBuild
+++ b/python/pychart/pychart.SlackBuild
@@ -23,7 +23,7 @@
 # ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 PRGNAM=pychart
-VERSION=1.39
+VERSION=${VERSION:-1.39}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 
@@ -31,7 +31,7 @@ SRCNAM=PyChart
 
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
-    i?86) ARCH=i486 ;;
+    i?86) ARCH=i586 ;;
     arm*) ARCH=arm ;;
        *) ARCH=$( uname -m ) ;;
   esac