diff --git a/Code/Mantid/Framework/CurveFitting/src/ConvertToYSpace.cpp b/Code/Mantid/Framework/CurveFitting/src/ConvertToYSpace.cpp
index c47c5d00b283..ca07c6fd3206 100644
--- a/Code/Mantid/Framework/CurveFitting/src/ConvertToYSpace.cpp
+++ b/Code/Mantid/Framework/CurveFitting/src/ConvertToYSpace.cpp
@@ -1,5 +1,12 @@
/*WIKI*
-TODO: Enter a full wiki-markup description of your algorithm here. You can then use the Build/wiki_maker.py script to generate your full wiki page.
+The final unit of the x-axis is changed to momentum (Y) space as defined by
+
+where is the mass in atomic mass units, is the incident energy,
+is the energy change and is defined as
+.
+
+The TOF is used to calculate and the dependence causes an increasing set of TOF values to be mapped
+to a decreasing set of values. As a result the final -space values are reversed to give a workspace with monotonically increasing values.
*WIKI*/
#include "MantidCurveFitting/ConvertToYSpace.h"