diff --git a/lib/Serialization/ASTReader.cpp b/lib/Serialization/ASTReader.cpp
index 1f02d3c..e574e25 100644
--- a/lib/Serialization/ASTReader.cpp
+++ b/lib/Serialization/ASTReader.cpp
@@ -4841,16 +4841,8 @@
     return;
   }
 
-  ASTContext &Ctx = *getContext();
   for (unsigned I = 0, N = DeclIDs.size(); I != N; ++I) {
     NamedDecl *D = cast<NamedDecl>(GetDecl(DeclIDs[I]));
-
-    // In C++, translation unit's visible decls map gets emitted in the AST
-    // file, but not on C; make the decl visible so it can be looked up.
-    if (!Ctx.getLangOptions().CPlusPlus)
-      SetExternalVisibleDeclsForName(Ctx.getTranslationUnitDecl(),
-                                     DeclarationName(II), D);
-
     if (SemaObj) {
       if (SemaObj->TUScope) {
         // Introduce this declaration into the translation-unit scope