diff --git a/include/llvm/Object/WindowsResource.h b/include/llvm/Object/WindowsResource.h
index 844256478cf..1ef00e2909f 100644
--- a/include/llvm/Object/WindowsResource.h
+++ b/include/llvm/Object/WindowsResource.h
@@ -43,10 +43,13 @@
 #include <map>
 
 namespace llvm {
+
 namespace object {
 
 class WindowsResource;
 
+enum class Machine { UNKNOWN, ARM, X64, X86 };
+
 class ResourceEntryRef {
 public:
   Error moveNext(bool &End);
diff --git a/lib/Object/WindowsResource.cpp b/lib/Object/WindowsResource.cpp
index f675a8389e6..7d1da37a634 100644
--- a/lib/Object/WindowsResource.cpp
+++ b/lib/Object/WindowsResource.cpp
@@ -328,7 +328,7 @@ private:
   std::unique_ptr<MemoryBuffer> OutputBuffer;
   char *BufferStart;
   uint64_t CurrentOffset = 0;
-  COFF::MachineTypes MachineType;
+  Machine MachineType;
   const WindowsResourceParser::TreeNode &Resources;
   const ArrayRef<std::vector<uint8_t>> Data;
   uint64_t FileSize;
@@ -350,7 +350,6 @@ WindowsResourceCOFFWriter::WindowsResourceCOFFWriter(
     : MachineType(MachineType), Resources(Parser.getTree()),
       Data(Parser.getData()), StringTable(Parser.getStringTable()) {
   performFileLayout();
-
   OutputBuffer = MemoryBuffer::getNewMemBuffer(FileSize);
 }
 
diff --git a/tools/llvm-cvtres/llvm-cvtres.cpp b/tools/llvm-cvtres/llvm-cvtres.cpp
index 36c15925e84..b331566d41c 100644
--- a/tools/llvm-cvtres/llvm-cvtres.cpp
+++ b/tools/llvm-cvtres/llvm-cvtres.cpp
@@ -120,21 +120,21 @@ int main(int argc_, const char *argv_[]) {
 
   bool Verbose = InputArgs.hasArg(OPT_VERBOSE);
 
-  COFF::MachineTypes MachineType;
+  Machine MachineType;
 
   if (InputArgs.hasArg(OPT_MACHINE)) {
     std::string MachineString = InputArgs.getLastArgValue(OPT_MACHINE).upper();
-    MachineType = StringSwitch<COFF::MachineTypes>(MachineString)
-                      .Case("ARM", COFF::IMAGE_FILE_MACHINE_ARMNT)
-                      .Case("X64", COFF::IMAGE_FILE_MACHINE_AMD64)
-                      .Case("X86", COFF::IMAGE_FILE_MACHINE_I386)
-                      .Default(COFF::IMAGE_FILE_MACHINE_UNKNOWN);
-    if (MachineType == COFF::IMAGE_FILE_MACHINE_UNKNOWN)
+    MachineType = StringSwitch<Machine>(MachineString)
+                      .Case("ARM", Machine::ARM)
+                      .Case("X64", Machine::X64)
+                      .Case("X86", Machine::X86)
+                      .Default(Machine::UNKNOWN);
+    if (MachineType == Machine::UNKNOWN)
       reportError("Unsupported machine architecture");
   } else {
     if (Verbose)
       outs() << "Machine architecture not specified; assumed X64.\n";
-    MachineType = COFF::IMAGE_FILE_MACHINE_AMD64;
+    MachineType = Machine::X64;
   }
 
   std::vector<std::string> InputFiles = InputArgs.getAllArgValues(OPT_INPUT);
@@ -155,10 +155,10 @@ int main(int argc_, const char *argv_[]) {
   if (Verbose) {
     outs() << "Machine: ";
     switch (MachineType) {
-    case COFF::IMAGE_FILE_MACHINE_ARMNT:
+    case Machine::ARM:
       outs() << "ARM\n";
       break;
-    case COFF::IMAGE_FILE_MACHINE_I386:
+    case Machine::X86:
       outs() << "X86\n";
       break;
     default:
@@ -207,7 +207,6 @@ int main(int argc_, const char *argv_[]) {
   std::copy(OutputBuffer->getBufferStart(), OutputBuffer->getBufferEnd(),
             FileBuffer->getBufferStart());
   error(FileBuffer->commit());
-
   if (Verbose) {
     Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(OutputFile);
     if (!BinaryOrErr)