diff --git a/Cantera/src/GasKinetics.h b/Cantera/src/GasKinetics.h
index 0bc46d839..25a34899d 100755
--- a/Cantera/src/GasKinetics.h
+++ b/Cantera/src/GasKinetics.h
@@ -46,6 +46,8 @@ namespace Cantera {
     class GasKineticsData {
     public:
         GasKineticsData() :
+	    m_logp0(0.0),
+	    m_logc0(0.0),
             m_ROP_ok(false), 
             m_temp(0.0)
             {}