diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 3e0a39c..0b03d00 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1825,10 +1825,10 @@
   auto *GO = dyn_cast<GlobalObject>(V);
   if (GO) {
     if (GO->getComdat() == reinterpret_cast<Comdat *>(1)) {
-      if (TT.isOSBinFormatMachO())
-        GO->setComdat(nullptr);
-      else
+      if (TT.supportsCOMDAT())
         GO->setComdat(TheModule->getOrInsertComdat(V->getName()));
+      else
+        GO->setComdat(nullptr);
     }
   }
   return V;