diff --git a/README.md b/README.md
index e0723c25..b8c2346b 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ CAD program, and create G-Code for Isolation routing.
 - updated code in self.on_view_source() to make it more responsive
 - fixed the TclCommand MillHoles
 - changed the name of TclCommand MillHoles to MillDrills and added a new TclCommand named MillSlots
-- modified the MillDrills and MillSlots TclCommands to accept as parameter a list of tool dimaeters to be milled instead of tool indexes
+- modified the MillDrills and MillSlots TclCommands to accept as parameter a list of tool diameters to be milled instead of tool indexes
 
 10.09.2019
 
diff --git a/tclCommands/TclCommandMillSlots.py b/tclCommands/TclCommandMillSlots.py
index 031e37ed..c4cd651b 100644
--- a/tclCommands/TclCommandMillSlots.py
+++ b/tclCommands/TclCommandMillSlots.py
@@ -55,7 +55,7 @@ class TclCommandMillSlots(TclCommandSignaled):
         name = args['name']
 
         if 'outname' not in args:
-            args['outname'] = name + "_mill"
+            args['outname'] = name + "_mill_slots"
 
         try:
             obj = self.app.collection.get_by_name(str(name))