diff --git a/Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.cpp b/Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.cpp
index 5010681c4a5066d85798fc3b2d711310237df3d0..525d7be659370d2bf2c7f710df8535aa16ec325a 100644
--- a/Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.cpp
+++ b/Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.cpp
@@ -28,6 +28,7 @@
  ***************************************************************************/
 
 #include "PowerScaleEngine.h"
+#include "ScaleEngine.h"
 
 /*!
   Return a dummy transformation
diff --git a/Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.h b/Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.h
index 6937c818556c63f4ec4e17ed630009dd18cf9c7a..d0120c45134600b38fb447e9524c0c497f898ba5 100644
--- a/Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.h
+++ b/Code/Mantid/MantidPlot/src/plot2D/PowerScaleEngine.h
@@ -4,7 +4,7 @@
     --------------------------------------------------------------------
     Copyright            : (C) 2009 by Ion Vasilief
     Email (use @ for *)  : ion_vasilief*yahoo.fr
-    Description          : Return a transformation for reciprocal (1/t) scales
+    Description          : Return a transformation for power (X^n) scales
 
  ***************************************************************************/
 
@@ -46,7 +46,7 @@ private:
 };
 
 /*!
-  \brief A scale engine for reciprocal (1/t) scales
+  \brief A scale engine for power (X^n) scales
 */
 
 class PowerScaleEngine: public QwtScaleEngine