diff --git a/recline/repl/shell.py b/recline/repl/shell.py
index afd5992..f1f2bac 100644
--- a/recline/repl/shell.py
+++ b/recline/repl/shell.py
@@ -206,6 +206,7 @@ def signal_handler(signum, frame):
         try:
             _run_command(commands.START_COMMAND, argv[1:])
         except CommandBackgrounded:
+            # START_COMMAND may run in the background intentionally; nothing more to do here.
             pass