diff --git a/src/Mod/Path/PathScripts/PathStock.py b/src/Mod/Path/PathScripts/PathStock.py
index a8b8e9999f..dfb15658a0 100644
--- a/src/Mod/Path/PathScripts/PathStock.py
+++ b/src/Mod/Path/PathScripts/PathStock.py
@@ -94,12 +94,12 @@ class StockFromBase(Stock):
     def __init__(self, obj, base):
         "Make stock"
         obj.addProperty("App::PropertyLink", "Base", "Base", QtCore.QT_TRANSLATE_NOOP("PathStock", "The base object this stock is derived from"))
-        obj.addProperty("App::PropertyLength", "ExtXneg", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in negative X direction"))
-        obj.addProperty("App::PropertyLength", "ExtXpos", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in positive X direction"))
-        obj.addProperty("App::PropertyLength", "ExtYneg", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in negative Y direction"))
-        obj.addProperty("App::PropertyLength", "ExtYpos", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in positive Y direction"))
-        obj.addProperty("App::PropertyLength", "ExtZneg", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in negative Z direction"))
-        obj.addProperty("App::PropertyLength", "ExtZpos", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in positive Z direction"))
+        obj.addProperty("App::PropertyDistance", "ExtXneg", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in negative X direction"))
+        obj.addProperty("App::PropertyDistance", "ExtXpos", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in positive X direction"))
+        obj.addProperty("App::PropertyDistance", "ExtYneg", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in negative Y direction"))
+        obj.addProperty("App::PropertyDistance", "ExtYpos", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in positive Y direction"))
+        obj.addProperty("App::PropertyDistance", "ExtZneg", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in negative Z direction"))
+        obj.addProperty("App::PropertyDistance", "ExtZpos", "Stock", QtCore.QT_TRANSLATE_NOOP("PathStock", "Extra allowance from part bound box in positive Z direction"))
 
         obj.Base = base
         obj.ExtXneg= 1.0