diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index ecb09da..f1a8720 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -921,7 +921,7 @@
   if ((getLangOpts().CUDA || getLangOpts().OpenMPIsDevice) &&
       !getFrontendOpts().AuxTriple.empty()) {
     auto TO = std::make_shared<TargetOptions>();
-    TO->Triple = getFrontendOpts().AuxTriple;
+    TO->Triple = llvm::Triple::normalize(getFrontendOpts().AuxTriple);
     TO->HostTriple = getTarget().getTriple().str();
     setAuxTarget(TargetInfo::CreateTargetInfo(getDiagnostics(), TO));
   }