diff --git a/Cantera/src/thermo/GibbsExcessVPSSTP.cpp b/Cantera/src/thermo/GibbsExcessVPSSTP.cpp
index 94b366c79..339b0edd9 100644
--- a/Cantera/src/thermo/GibbsExcessVPSSTP.cpp
+++ b/Cantera/src/thermo/GibbsExcessVPSSTP.cpp
@@ -332,6 +332,7 @@ namespace Cantera {
   void GibbsExcessVPSSTP::initThermo() {
     initLengths();
     VPStandardStateTP::initThermo();
+    getMoleFractions(DATA_PTR(moleFractions_));
   }
 
 
diff --git a/Cantera/src/thermo/StoichSubstance.h b/Cantera/src/thermo/StoichSubstance.h
index 991ef4962..a154f8096 100644
--- a/Cantera/src/thermo/StoichSubstance.h
+++ b/Cantera/src/thermo/StoichSubstance.h
@@ -394,7 +394,10 @@ namespace Cantera {
   protected:
 
     int m_kk;
-    doublereal m_tmin, m_tmax, m_press, m_p0;
+    doublereal m_tmin;
+    doublereal m_tmax;
+    doublereal m_press;
+    doublereal m_p0;
 
     mutable doublereal     m_tlast;
     mutable array_fp      m_h0_RT;