diff --git a/synapse/test_pyflakes.py b/synapse/test_pyflakes.py
new file mode 100644
index 0000000000000000000000000000000000000000..7b5b1a0858547453250ff847fec06c96ee76c852
--- /dev/null
+++ b/synapse/test_pyflakes.py
@@ -0,0 +1 @@
+import an_unused_module