diff --git a/source/2/2.4/2.4.3/Kcalc.rst b/source/2/2.4/2.4.3/Kcalc.rst
index 44c7ae3d..08cd14b6 100644
--- a/source/2/2.4/2.4.3/Kcalc.rst
+++ b/source/2/2.4/2.4.3/Kcalc.rst
@@ -36,7 +36,7 @@ To change the unit that angles are measured in for triginometric units in Kcalc.
 
 Numerical System mode
 ---------------------
-The numerical system mode lets you change your numerical base instead of say the default base 10. To switch to a binary calculations click the :guilabel:`Bin` radio button.
+The numerical system mode lets you change your numerical base instead of say the default base 10. To switch to a binary calculations click the :guilabel:`Bin` radio button. To switch the Octal or base 8 format click the :guilabel:`Oct` radio button. To switch to a hexadecimal format or base 16 format click the :guilabel:`Hexadecimal` radio button. For numbers greater than 10 for hexidecimal press the A-F buttons. When you are in number that are not part of a numerical base the button will get grayed out. To switch back to decimal or base 10 press the :guilabel:`Dec` radio button.   
 
 Customizing
 -----------