diff --git a/lib/public/win64/tier0.lib b/lib/public/win64/tier0.lib
index ded189bc..2e5cf26d 100644
Binary files a/lib/public/win64/tier0.lib and b/lib/public/win64/tier0.lib differ
diff --git a/public/tier1/KeyValues.h b/public/tier1/KeyValues.h
index a936919d..d2d1b6a7 100644
--- a/public/tier1/KeyValues.h
+++ b/public/tier1/KeyValues.h
@@ -72,7 +72,8 @@ typedef void * FileHandle_t;
 class KeyValues
 {
 public:
-	KeyValues( const char *setName );
+	// NULL kvsystem would use the default global kv system instead.
+	KeyValues( const char *setName, IKeyValuesSystem *kvsystem = NULL, bool unkState = false );
 
 	//
 	// AutoDelete class to automatically free the keyvalues.