diff --git a/camlib.py b/camlib.py
index d4c82400..7d756a12 100644
--- a/camlib.py
+++ b/camlib.py
@@ -2711,7 +2711,7 @@ class CNCjob(Geometry):
         
         # sort the tools list by the second item in tuple (here we have a dict with diameter of the tool)
         # so we actually are sorting the tools by diameter
-        sorted_tools = sorted(exobj.tools.items(), key = (lambda x: x[1]))
+        sorted_tools = sorted(exobj.tools.items(), key = lambda x: x[1])
         if tools == "all":
             tools = str([i[0] for i in sorted_tools])   # we get a string of ordered tools
             log.debug("Tools 'all' and sorted are: %s" % str(tools))