diff --git a/mode/python.py b/mode/python.py
index 01f04db..59993dd 100644
--- a/mode/python.py
+++ b/mode/python.py
@@ -440,7 +440,7 @@ class PythonContext(context.Context):
             i += 1
 
         if last is not None and y2 < len(self.namelines):
-            if self.namelines[y2][0]:
+            if self.namelines[y2] and self.namelines[y2][0]:
                 n = len(self.namelines[y2][0].split('.'))
                 curr = '.'.join([x[1] for x in stack[:n]])
             if curr: