diff --git a/src/thermo/LatticePhase.cpp b/src/thermo/LatticePhase.cpp
index 32fc40595..baeb4947a 100644
--- a/src/thermo/LatticePhase.cpp
+++ b/src/thermo/LatticePhase.cpp
@@ -267,7 +267,7 @@ void LatticePhase::initThermoXML(XML_Node& phaseNode, const std::string& id_)
     XML_Node* speciesDB = get_XML_NameID("speciesData", speciesList["datasrc"], &phaseNode.root());
 
     for (size_t k = 0; k < m_kk; k++) {
-        m_speciesMolarVolume[k] = m_site_density;
+        m_speciesMolarVolume[k] = 1.0 / m_site_density;
         XML_Node* s = speciesDB->findByAttr("name", speciesName(k));
         if (!s) {
             throw CanteraError(" LatticePhase::initThermoXML", "database problems");
diff --git a/test_problems/VCSnonideal/LatticeSolid_LiSi/output_blessed.txt b/test_problems/VCSnonideal/LatticeSolid_LiSi/output_blessed.txt
index f284199d5..be8da8781 100644
--- a/test_problems/VCSnonideal/LatticeSolid_LiSi/output_blessed.txt
+++ b/test_problems/VCSnonideal/LatticeSolid_LiSi/output_blessed.txt
@@ -145,7 +145,7 @@ VCS CALCULATION METHOD
 --------------------------------------------------------------------------------
 		Temperature  =         6.3e+02 Kelvin
 		Pressure     =      1.0132e+05 Pa 
-		total Volume =          5.5343 m**3
+		total Volume =         0.35041 m**3
 
 
 --------------------------------------------------------------------------------
diff --git a/test_problems/VCSnonideal/LatticeSolid_LiSi/verbose_blessed.txt b/test_problems/VCSnonideal/LatticeSolid_LiSi/verbose_blessed.txt
index 547f895ac..3a80177e1 100644
--- a/test_problems/VCSnonideal/LatticeSolid_LiSi/verbose_blessed.txt
+++ b/test_problems/VCSnonideal/LatticeSolid_LiSi/verbose_blessed.txt
@@ -384,7 +384,7 @@ VCS CALCULATION METHOD
 --------------------------------------------------------------------------------
 		Temperature  =         6.3e+02 Kelvin
 		Pressure     =      1.0132e+05 Pa 
-		total Volume =          5.5343 m**3
+		total Volume =          0.35041 m**3
 
 
 --------------------------------------------------------------------------------