diff --git a/llvm/lib/MC/MCParser/AsmParser.cpp b/llvm/lib/MC/MCParser/AsmParser.cpp
--- a/llvm/lib/MC/MCParser/AsmParser.cpp
+++ b/llvm/lib/MC/MCParser/AsmParser.cpp
@@ -6327,7 +6327,7 @@
 MCAsmParser *llvm::createMCAsmParser(SourceMgr &SM, MCContext &C,
                                      MCStreamer &Out, const MCAsmInfo &MAI,
                                      unsigned CB) {
-  if (C.getTargetTriple().isOSzOS())
+  if (C.getTargetTriple().isOSBinFormatGOFF())
     return new HLASMAsmParser(SM, C, Out, MAI, CB);
 
   return new AsmParser(SM, C, Out, MAI, CB);