diff --git a/core/AMBuilder b/core/AMBuilder
index 5b15887..00d8f54 100644
--- a/core/AMBuilder
+++ b/core/AMBuilder
@@ -18,7 +18,6 @@ for sdk_name in MMS.sdks:
     'provider/console.cpp',
     'provider/provider_ep2.cpp',
     'sourcehook/sourcehook.cpp',
-    'sourcehook/sourcehook_hookmangen.cpp',
     'sourcehook/sourcehook_impl_chookidman.cpp',
     'sourcehook/sourcehook_impl_chookmaninfo.cpp',
     'sourcehook/sourcehook_impl_cproto.cpp',
@@ -26,5 +25,9 @@ for sdk_name in MMS.sdks:
     'gamedll_bridge.cpp',
     'vsp_bridge.cpp'
   ]
+
+  # Source2 hack. TODO: check this more deterministically, "are we doing an x64 build?"
+  if sdk.name != 'dota' or builder.target_platform == 'windows':
+    binary.sources += ['sourcehook/sourcehook_hookmangen.cpp']
   nodes = builder.Add(binary)
   MMS.binaries += [nodes]
diff --git a/core/metamod.cpp b/core/metamod.cpp
index d283c4b..c93196c 100644
--- a/core/metamod.cpp
+++ b/core/metamod.cpp
@@ -131,7 +131,9 @@ static ConVar *mm_basedir = NULL;
 static CreateInterfaceFn engine_factory = NULL;
 static CreateInterfaceFn physics_factory = NULL;
 static CreateInterfaceFn filesystem_factory = NULL;
+#if !defined( __amd64__ )
 static CHookManagerAutoGen g_SH_HookManagerAutoGen(&g_SourceHook);
+#endif
 static META_RES last_meta_res;
 static IServerPluginCallbacks *vsp_callbacks = NULL;
 static bool were_plugins_loaded = false;
@@ -1025,11 +1027,19 @@ void *MetamodSource::MetaFactory(const char *iface, int *ret, PluginId *id)
 	}
 	else if (strcmp(iface, MMIFACE_SH_HOOKMANAUTOGEN) == 0)
 	{
+#if defined( __amd64__ )
+		if (ret)
+		{
+			*ret = META_IFACE_FAILED;
+		}
+		return nullptr;
+#else
 		if (ret)
 		{
 			*ret = META_IFACE_OK;
 		}
 		return static_cast<void *>(static_cast<SourceHook::IHookManagerAutoGen *>(&g_SH_HookManagerAutoGen));
+#endif
 	}
 
 	CPluginManager::CPlugin *pl;