diff --git a/Cantera/src/equil/MultiPhaseEquil.cpp b/Cantera/src/equil/MultiPhaseEquil.cpp
index 86ddcb6f3..fdddec117 100644
--- a/Cantera/src/equil/MultiPhaseEquil.cpp
+++ b/Cantera/src/equil/MultiPhaseEquil.cpp
@@ -1,6 +1,15 @@
+/**
+ * @file MultiPhaseEquil.cpp
+ */
+/*
+ * $Id$
+ */
+
 #include "MultiPhaseEquil.h"
 #include "MultiPhase.h"
+#ifdef WITH_ELECTROLYTES
 #include "MolalityVPSSTP.h"
+#endif
 #include "sort.h"
 #include "global.h"
 
@@ -946,10 +955,11 @@ namespace Cantera {
       }
       VolPhaseVolumes *= TMolesPhase;
       vol += VolPhaseVolumes;
-     if (actConvention == 1) {
-        MolalityVPSSTP *mTP = static_cast<MolalityVPSSTP *>(tp);
-        tp->getChemPotentials(DATA_PTR(mu));
+      if (actConvention == 1) {
+#ifdef WITH_ELECTROLYTES
+        MolalityVPSSTP *mTP = static_cast<MolalityVPSSTP *>(tp);  
         mTP->getMolalities(DATA_PTR(molalities));
+#endif
         tp->getChemPotentials(DATA_PTR(mu));
 
         if (iphase == 0) {
diff --git a/Cantera/src/equil/vcs_MultiPhaseEquil.cpp b/Cantera/src/equil/vcs_MultiPhaseEquil.cpp
index 5475a7dbf..42761f874 100644
--- a/Cantera/src/equil/vcs_MultiPhaseEquil.cpp
+++ b/Cantera/src/equil/vcs_MultiPhaseEquil.cpp
@@ -18,15 +18,23 @@
 
 #ifdef CANTERA_SRC_TREE
 #include "speciesThermoTypes.h"
+#ifdef WITH_IDEAL_SOLUTIONS
 #include "IdealSolidSolnPhase.h"
+#endif
+#ifdef WITH_ELECTROLYTES
 #include "IdealMolalSoln.h"
+#endif
 #include "ChemEquil.h"
 #else 
 #include "cantera/Cantera.h"
 #include "cantera/thermo.h"
 #include "cantera/kernel/speciesThermoTypes.h"
+#ifdef WITH_IDEAL_SOLUTIONS
 #include "cantera/kernel/IdealSolidSolnPhase.h"
+#endif
+#ifdef WITH_ELECTROLYTES
 #include "cantera/kernel/IdealMolalSoln.h"
+#endif
 #include "cantera/kernel/ChemEquil.h"
 #endif
 
@@ -808,9 +816,10 @@ namespace Cantera {
 
  
       if (actConvention == 1) {
+#ifdef WITH_ELECTROLYTES
 	MolalityVPSSTP *mTP = static_cast<MolalityVPSSTP *>(tp);
-	tp->getChemPotentials(VCS_DATA_PTR(mu));
 	mTP->getMolalities(VCS_DATA_PTR(molalities));
+#endif
 	tp->getChemPotentials(VCS_DATA_PTR(mu));
   
 	if (iphase == 0) {