diff --git a/src/Core/Parser/Parser.cs b/src/Core/Parser/Parser.cs
index 15e0e551..2fdcd34c 100644
--- a/src/Core/Parser/Parser.cs
+++ b/src/Core/Parser/Parser.cs
@@ -48,8 +48,9 @@ namespace CppSharp
         /// <summary>
         /// Parses a C++ source file to a translation unit.
         /// </summary>
-        public ParserResult ParseSourceFile(SourceFile file, ParserOptions options)
+        public ParserResult ParseSourceFile(SourceFile file)
         {
+            var options = file.Options;
             options.ASTContext = ASTContext;
             options.FileName = file.Path;
 
@@ -62,13 +63,13 @@ namespace CppSharp
         /// <summary>
         /// Parses the project source files.
         /// </summary>
-        public void ParseProject(Project project, ParserOptions options)
+        public void ParseProject(Project project)
         {
             // TODO: Search for cached AST trees on disk
             // TODO: Do multi-threaded parsing of source files
 
             foreach (var source in project.Sources)
-                ParseSourceFile(source, options);
+                ParseSourceFile(source);
         }
 
         /// <summary>
diff --git a/src/Generator/Driver.cs b/src/Generator/Driver.cs
index 78b21522..bc9a1aac 100644
--- a/src/Generator/Driver.cs
+++ b/src/Generator/Driver.cs
@@ -170,7 +170,7 @@ namespace CppSharp
             var parser = new ClangParser(new Parser.AST.ASTContext());
 
             parser.SourceParsed += OnSourceFileParsed;
-            parser.ParseProject(Project, Options);
+            parser.ParseProject(Project);
            
             TargetInfo = parser.GetTargetInfo(Options);