diff --git a/lib/Frontend/FrontendAction.cpp b/lib/Frontend/FrontendAction.cpp
index 4c2b1e9..464b589 100644
--- a/lib/Frontend/FrontendAction.cpp
+++ b/lib/Frontend/FrontendAction.cpp
@@ -136,7 +136,7 @@
     // simplest way to reuse the logic in ParseAST.
     const char *EmptyStr = "";
     llvm::MemoryBuffer *SB =
-      llvm::MemoryBuffer::getMemBuffer(EmptyStr, EmptyStr, "<dummy input>");
+      llvm::MemoryBuffer::getMemBuffer(EmptyStr, "<dummy input>");
     CI.getSourceManager().createMainFileIDForMemBuffer(SB);
   } else {
     if (!CI.InitializeSourceManager(getCurrentFile()))