diff --git a/Cantera/src/thermo/IdealMolalSoln.cpp b/Cantera/src/thermo/IdealMolalSoln.cpp
index 58f31d694..9ba363902 100644
--- a/Cantera/src/thermo/IdealMolalSoln.cpp
+++ b/Cantera/src/thermo/IdealMolalSoln.cpp
@@ -330,10 +330,9 @@ namespace Cantera {
    *
    */
   doublereal IdealMolalSoln::standardConcentration(int k) const {
-    double c0, mvSolvent;
+    double c0 = 1.0, mvSolvent;
     switch (m_formGC) {
     case 0:
-      c0 = 1.0;
       break;
     case 1:
       c0 = 1.0 /m_speciesMolarVolume[m_indexSolvent];
diff --git a/Cantera/src/thermo/WaterPDSS.h b/Cantera/src/thermo/WaterPDSS.h
index 2561ffbcb..34bc695ae 100644
--- a/Cantera/src/thermo/WaterPDSS.h
+++ b/Cantera/src/thermo/WaterPDSS.h
@@ -17,7 +17,7 @@
 #define CT_WATERPDSS_H
 #include "ct_defs.h"
 #include "PDSS.h"
-class XML_Node;
+//class XML_Node;
 #include "ThermoPhase.h"
 
 class WaterPropsIAPWS;