diff -r 624b9694cb0d -r 08e4394ff4fb runtime/NevowServer.py
--- a/runtime/NevowServer.py	Wed Aug 16 15:18:57 2017 +0300
+++ b/runtime/NevowServer.py	Wed Aug 16 16:37:45 2017 +0300
@@ -198,7 +198,8 @@
         if state != self.oldstate:
             action = {'Started': self.site.PLCStarted,
                       'Stopped': self.site.PLCStopped}.get(state, None)
-            if action is not None: action ()
+            if action is not None:
+                action()
             self.oldstate = state