diff --git a/lib/python/vismach.py b/lib/python/vismach.py
index cac66cb..e83368f 100644
--- a/lib/python/vismach.py
+++ b/lib/python/vismach.py
@@ -995,10 +995,10 @@ class AsciiOBJ:
             glBegin(GL_TRIANGLES)
             print "obj", len(self.f)
             for f in self.f:
-                for v, t, n in f:
-                    if n:
-                        glNormal3f(*self.vn[n-1])
-                    glVertex3f(*self.v[v-1])
+                for i in f:
+                    if len(i) > 2:
+                        glNormal3f(*self.v[i[2]-1])
+                    glVertex3f(*self.v[i[0]-1])
             glEnd()
             glEndList()
             del self.v