diff --git a/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp b/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp
index 3fbca3506eb..e39acc7ee14 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RTDyldMemoryManager.cpp
@@ -265,8 +265,8 @@ RTDyldMemoryManager::getSymbolAddressInProcess(const std::string &Name) {
   const char *NameStr = Name.c_str();
 
   // DynamicLibrary::SearchForAddresOfSymbol expects an unmangled 'C' symbol
-  // name so if we're on Darwin or 32-bit Windows, strip the leading '_' off.
-#if defined(__APPLE__) || (defined(_WIN32) && !defined(_WIN64))
+  // name so ff we're on Darwin, strip the leading '_' off.
+#ifdef __APPLE__
   if (NameStr[0] == '_')
     ++NameStr;
 #endif
diff --git a/unittests/ExecutionEngine/ExecutionEngineTest.cpp b/unittests/ExecutionEngine/ExecutionEngineTest.cpp
index 798f5ae3575..7cad8413069 100644
--- a/unittests/ExecutionEngine/ExecutionEngineTest.cpp
+++ b/unittests/ExecutionEngine/ExecutionEngineTest.cpp
@@ -139,8 +139,8 @@ TEST_F(ExecutionEngineTest, LookupWithMangledAndDemangledSymbol) {
   // RTDyldMemoryManager::getSymbolAddressInProcess expects a mangled symbol,
   // but DynamicLibrary is a wrapper for dlsym, which expects the unmangled C
   // symbol name. This test verifies that getSymbolAddressInProcess strips the
-  // leading '_' on Darwin and 32-bit Windows, but not on other platforms.
-#if defined(__APPLE__) || (defined(_WIN32) && !defined(_WIN64))
+  // leading '_' on Darwin, but not on other platforms.
+#ifdef __APPLE__
   EXPECT_EQ(reinterpret_cast<uint64_t>(&x),
             RTDyldMemoryManager::getSymbolAddressInProcess("_x"));
 #else