diff --git a/tf_bag/BagTfTransformer.py b/tf_bag/BagTfTransformer.py
index b94638a..437af6a 100644
--- a/tf_bag/BagTfTransformer.py
+++ b/tf_bag/BagTfTransformer.py
@@ -288,7 +288,7 @@ def getTransformGraphInfo(self, time=None):
         if time is None:
             time = self.getTimeAtPercent(50)
         self.populateTransformerAtTime(time)
-        return self.transformer.allFramesAsDot()
+        return self.transformer._allFramesAsDot()
 
     def getStartTime(self):
         """