diff --git a/ipykernel/debugger.py b/ipykernel/debugger.py
index 5d5116995..db5fbc841 100644
--- a/ipykernel/debugger.py
+++ b/ipykernel/debugger.py
@@ -315,17 +315,21 @@ async def source(self, message):
 
     async def stackTrace(self, message):
         reply = await self._forward_message(message)
-        # The stackFrames array has the following content:
+        # The stackFrames array can have the following content:
         # { frames from the notebook}
         # ...
         # { 'id': xxx, 'name': '<module>', ... } <= this is the first frame of the code from the notebook
         # { frames from ipykernel }
         # ...
         # {'id': yyy, 'name': '<module>', ... } <= this is the first frame of ipykernel code
-        # We want to remove all the frames from ipykernel
-        sf_list = reply['body']['stackFrames']
-        module_idx = len(sf_list) - next(i for i, v in enumerate(reversed(sf_list), 1) if v['name'] == '<module>' and i != 1)
-        reply['body']['stackFrames'] = reply['body']['stackFrames'][:module_idx+1]
+        # or only the frames from the notebook.
+        # We want to remove all the frames from ipykernel when they are present.
+        try:
+            sf_list = reply['body']['stackFrames']
+            module_idx = len(sf_list) - next(i for i, v in enumerate(reversed(sf_list), 1) if v['name'] == '<module>' and i != 1)
+            reply['body']['stackFrames'] = reply['body']['stackFrames'][:module_idx+1]
+        except StopIteration:
+            pass
         return reply
 
     def accept_variable(self, variable_name):