diff --git a/clang/unittests/Lex/LexerTest.cpp b/clang/unittests/Lex/LexerTest.cpp
index a8e25cb..40ce928 100644
--- a/clang/unittests/Lex/LexerTest.cpp
+++ b/clang/unittests/Lex/LexerTest.cpp
@@ -62,7 +62,7 @@
     (void) SourceMgr.createMainFileIDForMemBuffer(buf);
 
     VoidModuleLoader ModLoader;
-    HeaderSearch HeaderInfo(new HeaderSearchOptions, FileMgr, Diags, LangOpts,
+    HeaderSearch HeaderInfo(new HeaderSearchOptions, SourceMgr, Diags, LangOpts,
                             Target.getPtr());
     Preprocessor PP(new PreprocessorOptions(), Diags, LangOpts, Target.getPtr(),
                     SourceMgr, HeaderInfo, ModLoader, /*IILookup =*/ 0,