diff --git a/srcxray.py b/srcxray.py
index 7c1e654..f328b56 100755
--- a/srcxray.py
+++ b/srcxray.py
@@ -903,7 +903,7 @@ def write_dot(g, dot):
         dot.write("{ rank=same %s }\n" %
                   (' '.join(['"%s"' % (str(a)) for a in ranks[r]])))
     for n in g.nodes():
-        prop = Munch(g.node[n])
+        prop = Munch(g._node[n])
         if scaled and len(ranks):
             prop.fontsize = 500 + 10000 / (len(ranks[rank(g, n)]) + 1)
         prop.fontsize = 30 + min(5 * len(g.edges(n)), 50)