diff --git a/clang/lib/Lex/Preprocessor.cpp b/clang/lib/Lex/Preprocessor.cpp
index e129499..1f9a469 100644
--- a/clang/lib/Lex/Preprocessor.cpp
+++ b/clang/lib/Lex/Preprocessor.cpp
@@ -516,9 +516,9 @@
     // If we've been asked to skip bytes in the main file (e.g., as part of a
     // precompiled preamble), do so now.
     if (SkipMainFilePreamble.first > 0)
-      CurLexer->SkipBytes(SkipMainFilePreamble.first, 
-                          SkipMainFilePreamble.second);
-    
+      CurLexer->SetByteOffset(SkipMainFilePreamble.first,
+                              SkipMainFilePreamble.second);
+
     // Tell the header info that the main file was entered.  If the file is later
     // #imported, it won't be re-entered.
     if (const FileEntry *FE = SourceMgr.getFileEntryForID(MainFileID))