diff --git a/pykat/commands.py b/pykat/commands.py
index 90576ca505e127b5b011abc07a6a74922b41df5a..76d803f71b0de709662925f48cc944e5de0dcced 100644
--- a/pykat/commands.py
+++ b/pykat/commands.py
@@ -170,7 +170,7 @@ class lock(Command):
         self.__accuracy = accuracy
         self.singleLock = singleLock
         self.enabled = True
-        
+        self.noplot = False
         
         self.output = putter(name, self)
         self._putters.append(self.output)