diff --git a/libraries/app/CMakeLists.txt b/libraries/app/CMakeLists.txt
index 32a416ea..caef157e 100644
--- a/libraries/app/CMakeLists.txt
+++ b/libraries/app/CMakeLists.txt
@@ -17,7 +17,7 @@ target_include_directories( graphene_app
                             "${CMAKE_CURRENT_SOURCE_DIR}/../egenesis/include" )
 
 if(MSVC)
-  set_source_files_properties( application.cpp api.cpp PROPERTIES COMPILE_FLAGS "/bigobj" )
+  set_source_files_properties( application.cpp api.cpp database_api.cpp PROPERTIES COMPILE_FLAGS "/bigobj" )
 endif(MSVC)
 
 INSTALL( TARGETS
diff --git a/libraries/app/database_api.cpp b/libraries/app/database_api.cpp
index 097c611e..cebfdc89 100644
--- a/libraries/app/database_api.cpp
+++ b/libraries/app/database_api.cpp
@@ -7,6 +7,8 @@
 
 #include <boost/range/iterator_range.hpp>
 
+#include <cctype>
+
 namespace graphene { namespace app {
 
 class database_api_impl;