diff --git a/build/Tests.lua b/build/Tests.lua
index dd1e908c..7f976f3d 100644
--- a/build/Tests.lua
+++ b/build/Tests.lua
@@ -49,6 +49,7 @@ function SetupTestGeneratorProject(name)
 
     links
     {
+      "System.Core",
       "CppSharp.AST",
       "CppSharp.Generator",
       "CppSharp.Generator.Tests"
diff --git a/src/CppParser/AST.cpp b/src/CppParser/AST.cpp
index fa2b6372..390126ce 100644
--- a/src/CppParser/AST.cpp
+++ b/src/CppParser/AST.cpp
@@ -591,7 +591,7 @@ DEF_STRING(TranslationUnit, FileName)
 DEF_VECTOR(TranslationUnit, MacroDefinition*, Macros)
 
 NativeLibrary::NativeLibrary()
-    : ArchType(ArchType::UnknownArch)
+    : ArchType(AST::ArchType::UnknownArch)
 {
 }