diff --git a/src/xenia/base/mapped_memory.h b/src/xenia/base/mapped_memory.h
index f3efc2f98..e88a4fff2 100644
--- a/src/xenia/base/mapped_memory.h
+++ b/src/xenia/base/mapped_memory.h
@@ -33,7 +33,8 @@ class MappedMemory {
   virtual ~MappedMemory() = default;
 
   std::unique_ptr<MappedMemory> Slice(Mode mode, size_t offset, size_t length) {
-    return std::make_unique<MappedMemory>(path_, mode, data() + offset, length);
+    return std::unique_ptr<MappedMemory>(
+        new MappedMemory(path_, mode, data() + offset, length));
   }
 
   uint8_t* data() const { return reinterpret_cast<uint8_t*>(data_); }
diff --git a/src/xenia/base/mapped_memory_posix.cc b/src/xenia/base/mapped_memory_posix.cc
index 530582c87..acfec7abe 100644
--- a/src/xenia/base/mapped_memory_posix.cc
+++ b/src/xenia/base/mapped_memory_posix.cc
@@ -50,7 +50,8 @@ std::unique_ptr<MappedMemory> MappedMemory::Open(const std::wstring& path,
       break;
   }
 
-  auto mm = std::make_unique<PosixMappedMemory>(path, mode);
+  auto mm =
+      std::unique_ptr<PosixMappedMemory>(new PosixMappedMemory(path, mode));
 
   mm->file_handle = fopen(xe::to_string(path).c_str(), mode_str);
   if (!mm->file_handle) {
diff --git a/src/xenia/base/threading_posix.cc b/src/xenia/base/threading_posix.cc
index c9f2ffdd4..3089f11b8 100644
--- a/src/xenia/base/threading_posix.cc
+++ b/src/xenia/base/threading_posix.cc
@@ -112,7 +112,8 @@ struct ThreadStartData {
   std::function<void()> start_routine;
 };
 void* ThreadStartRoutine(void* parameter) {
-  current_thread_ = std::make_unique<PosixThread>(::pthread_self());
+  current_thread_ =
+      std::unique_ptr<PosixThread>(new PosixThread(::pthread_self()));
 
   auto start_data = reinterpret_cast<ThreadStartData*>(parameter);
   start_data->start_routine();
@@ -137,7 +138,7 @@ std::unique_ptr<Thread> Thread::Create(CreationParameters params,
     return nullptr;
   }
 
-  return std::make_unique<PosixThread>(handle);
+  return std::unique_ptr<PosixThread>(new PosixThread(handle));
 }
 
 }  // namespace threading