diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index ac57a69..3afe300 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -1977,9 +1977,11 @@
     return 0;
 
   CIndexer *CXXIdx = static_cast<CIndexer *>(CIdx);
+  FileSystemOptions FileSystemOpts;
+  FileSystemOpts.WorkingDir = CXXIdx->getWorkingDirectory();
 
   llvm::IntrusiveRefCntPtr<Diagnostic> Diags;
-  return ASTUnit::LoadFromASTFile(ast_filename, Diags,
+  return ASTUnit::LoadFromASTFile(ast_filename, Diags, FileSystemOpts,
                                   CXXIdx->getOnlyLocalDecls(),
                                   0, 0, true);
 }
@@ -2405,7 +2407,8 @@
   ASTUnit *CXXUnit = static_cast<ASTUnit *>(tu);
 
   FileManager &FMgr = CXXUnit->getFileManager();
-  const FileEntry *File = FMgr.getFile(file_name, file_name+strlen(file_name));
+  const FileEntry *File = FMgr.getFile(file_name, file_name+strlen(file_name),
+                                       CXXUnit->getFileSystemOpts());
   return const_cast<FileEntry *>(File);
 }
 
diff --git a/tools/libclang/CIndexCodeCompletion.cpp b/tools/libclang/CIndexCodeCompletion.cpp
index d42e9ea..c92e2af 100644
--- a/tools/libclang/CIndexCodeCompletion.cpp
+++ b/tools/libclang/CIndexCodeCompletion.cpp
@@ -232,12 +232,14 @@
   
   /// \brief Language options used to adjust source locations.
   LangOptions LangOpts;
-
-  /// \brief Source manager, used for diagnostics.
-  SourceManager SourceMgr;
   
   /// \brief File manager, used for diagnostics.
   FileManager FileMgr;
+
+  FileSystemOptions FileSystemOpts;
+
+  /// \brief Source manager, used for diagnostics.
+  SourceManager SourceMgr;
   
   /// \brief Temporary files that should be removed once we have finished
   /// with the code-completion results.
@@ -248,7 +250,8 @@
 };
 
 AllocatedCXCodeCompleteResults::AllocatedCXCodeCompleteResults() 
-  : CXCodeCompleteResults(), Diag(new Diagnostic), SourceMgr(*Diag) { }
+  : CXCodeCompleteResults(), Diag(new Diagnostic),
+    SourceMgr(*Diag, FileMgr, FileSystemOpts) { }
   
 AllocatedCXCodeCompleteResults::~AllocatedCXCodeCompleteResults() {
   for (unsigned I = 0, N = NumResults; I != N; ++I)
diff --git a/tools/libclang/CIndexer.h b/tools/libclang/CIndexer.h
index 89b0987..1fcb964 100644
--- a/tools/libclang/CIndexer.h
+++ b/tools/libclang/CIndexer.h
@@ -32,7 +32,8 @@
   bool DisplayDiagnostics;
 
   llvm::sys::Path ResourcesPath;
-  
+  std::string WorkingDir;
+
 public:
  CIndexer() : OnlyLocalDecls(false), DisplayDiagnostics(false) { }
   
@@ -49,6 +50,9 @@
 
   /// \brief Get the path of the clang resource files.
   std::string getClangResourcesPath();
+
+  const std::string &getWorkingDirectory() const { return WorkingDir; }
+  void setWorkingDirectory(const std::string &Dir) { WorkingDir = Dir; }
 };
 
 namespace clang {