diff --git a/winconfig.h b/winconfig.h
index ef942b820..d542e6107 100644
--- a/winconfig.h
+++ b/winconfig.h
@@ -69,8 +69,11 @@ typedef  int          ftnlen;       // Fortran hidden string length type
 
 // Identify whether the operating system is windows based, with
 // microsoft vc++ being used as the compiler
+
 #define WINMSVC
 
+#define HAS_SUNDIALS 1
+
 //--------- Fonts for reaction path diagrams ----------------------
 #define RXNPATH_FONT "Helvetica"
 
@@ -87,5 +90,6 @@ typedef  int          ftnlen;       // Fortran hidden string length type
 #define WITH_METAL
 #define WITH_STOICH_SUBSTANCE
 #define WITH_PURE_FLUIDS
+#define WITH_LATTICE_SOLID
 
 #endif