Remove trailing space.
diff --git a/src/portpicker.py b/src/portpicker.py
index 28c1971..4b514d7 100644
--- a/src/portpicker.py
+++ b/src/portpicker.py
@@ -205,7 +205,7 @@
         # Ask the OS for an unused port.
         port = bind(0, _PROTOS[0][0], _PROTOS[0][1])
         # Check if this port is unused on the other protocol.
-        if (port and port not in _random_ports and 
+        if (port and port not in _random_ports and
             bind(port, _PROTOS[1][0], _PROTOS[1][1])):
             _random_ports.add(port)
             return port