diff --git a/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp b/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
index 5339e7f6f70..31a1f8df206 100644
--- a/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
+++ b/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
@@ -40,7 +40,6 @@ AMDGPUMCAsmInfo::AMDGPUMCAsmInfo(StringRef &TT) : MCAsmInfo() {
   GPRel32Directive = 0;
   SunStyleELFSectionSwitchSyntax = true;
   UsesELFSectionDirectiveForBSS = true;
-  HasMicrosoftFastStdCallMangling = false;
 
   //===--- Alignment Information ----------------------------------------===//
   AlignDirective = ".align\t";