diff --git a/Cantera/cxx/Makefile.in b/Cantera/cxx/Makefile.in
index 4c51656fc..9bac968f9 100644
--- a/Cantera/cxx/Makefile.in
+++ b/Cantera/cxx/Makefile.in
@@ -20,7 +20,7 @@ CXX_H = Cantera.h  equilibrium.h  IncompressibleSolid.h \
         Metal.h   PureFluid.h   transport.h Edge.h  \
         IdealGasMix.h  Interface.h    numerics.h  \
         reactionpaths.h  zerodim.h importPhase.h thermo.h \
-        radiation.h spectra.h electrolyteThermo.h Cantera.mak
+        radiation.h spectra.h electrolyteThermo.h Cantera.mak Cantera_bt.mak
 
 all:
 	@(cd include ; \
diff --git a/Cantera/cxx/include/equilibrium.h b/Cantera/cxx/include/equilibrium.h
index 30c558bb2..1de354127 100755
--- a/Cantera/cxx/include/equilibrium.h
+++ b/Cantera/cxx/include/equilibrium.h
@@ -11,7 +11,9 @@
 #include "kernel/equil.h"
 #include "kernel/ChemEquil.h"
 #include "kernel/MultiPhaseEquil.h"
+#ifdef WITH_VCSNONIDEAL
 #include "kernel/vcs_MultiPhaseEquil.h"
 #endif
+#endif