diff --git a/build.py b/build.py
index 4c1f7eca80cb3145d9f1b263ed4f67ecd3c6e47c..9f199070c49bc0903a1863ee4044c9746988eedc 100644
--- a/build.py
+++ b/build.py
@@ -24,8 +24,7 @@ if __name__ == '__main__':
 
         # Swap placholders
         for ex_no, d in enumerate(data, start=1):
-            d['lp'] = unicode(ex_no)
-            d['labno'] = unicode(i)
+            d.update({'lp': unicode(ex_no), 'labno': unicode(i)})
 
             for k, v in d.iteritems():
                 lab = lab.replace(u'$%s$' % (k, ), v)