diff --git a/lib/MC/MCAsmStreamer.cpp b/lib/MC/MCAsmStreamer.cpp
index 62735ad..4f7699c 100644
--- a/lib/MC/MCAsmStreamer.cpp
+++ b/lib/MC/MCAsmStreamer.cpp
@@ -363,14 +363,13 @@
   EmitEOL();
 }
 
-// .tbss sym$tlv$init, size, align
+// .tbss sym, size, align
+// This depends that the symbol has already been mangled from the original,
+// e.g. _a.
 void MCAsmStreamer::EmitTBSSSymbol(MCSymbol *Symbol, uint64_t Size,
                                    unsigned ByteAlignment) {
   assert(Symbol != NULL && "Symbol shouldn't be NULL!");
-  OS << ".tbss ";
-  
-  // This is a mach-o specific directive and the name requires some mangling.
-  OS << *Symbol << "$tlv$init, " << Size;
+  OS << ".tbss " << *Symbol << ", " << Size;
   
   // Output align if we have it.
   if (ByteAlignment != 0) OS << ", " << Log2_32(ByteAlignment);
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 18977de..e5af357 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -1436,13 +1436,9 @@
   StringRef Name;
   if (ParseIdentifier(Name))
     return TokError("expected identifier in directive");
-  
-  // Demangle the name output.  The trailing characters are guaranteed to be
-  // $tlv$init so just strip that off.
-  StringRef DemName = Name.substr(0, Name.size() - strlen("$tlv$init"));
-  
+    
   // Handle the identifier as the key symbol.
-  MCSymbol *Sym = CreateSymbol(DemName);
+  MCSymbol *Sym = CreateSymbol(Name);
 
   if (Lexer.isNot(AsmToken::Comma))
     return TokError("unexpected token in directive");
diff --git a/test/MC/AsmParser/directive_tbss.s b/test/MC/AsmParser/directive_tbss.s
index 01ba17b..38d3a3e 100644
--- a/test/MC/AsmParser/directive_tbss.s
+++ b/test/MC/AsmParser/directive_tbss.s
@@ -1,4 +1,4 @@
-# RUN: llvm-mc -triple i386-unknown-unknown %s | FileCheck %s
+# RUN: llvm-mc -triple i386-unknown-darwin %s | FileCheck %s
 
 # CHECK: .tbss _a$tlv$init, 4
 # CHECK: .tbss _b$tlv$init, 4, 3