diff --git a/test/mitmproxy/tools/console/test_commander.py b/test/mitmproxy/tools/console/test_commander.py
index b95fe7079..06e676c0b 100644
--- a/test/mitmproxy/tools/console/test_commander.py
+++ b/test/mitmproxy/tools/console/test_commander.py
@@ -26,6 +26,7 @@ def tctx():
     yield tctx
 
     # This runs after each test
+    ch.command_history_file.close()
     shutil.rmtree(confdir)