diff --git a/cowrie/core/session.py b/cowrie/core/session.py
index 6eca0b5..bc60478 100644
--- a/cowrie/core/session.py
+++ b/cowrie/core/session.py
@@ -38,7 +38,7 @@ class HoneyPotSSHSession(session.SSHSession):
             raise ValueError("Bad data given in env request")
         log.msg(eventid='COW0013', format='request_env: %(name)s=%(value)s',
             name=name, value=value)
-        # Environment variables come after shell or before exec command
+        # FIXME: This only works for shell, not for exec command
         if self.session:
             self.session.environ[name] = value
         return 0