diff --git a/include/cantera/plasma/PlasmaPhase.h b/include/cantera/plasma/PlasmaPhase.h
index 65dad72a150..abe619c10eb 100644
--- a/include/cantera/plasma/PlasmaPhase.h
+++ b/include/cantera/plasma/PlasmaPhase.h
@@ -63,7 +63,10 @@ class PlasmaPhase: public IdealGasPhase
 {
 public:
     //! Construct and initialize an PlasmaPhase ThermoPhase object
-    //! directly from an ASCII input file
+    //! directly from an ASCII input file. The constructor initializes the electron
+    //! energy distribution to be Druyvesteyn distribution (m_x = 2.0). The initial
+    //! electron energy grid is set to a linear space which starts at 0.01 eV and ends
+    //! at 1 eV with 1000 points.
     /*!
      * @param inputFile Name of the input file containing the phase definition
      *                  to set up the object. If blank, an empty phase will be