diff --git a/angelscript/source/as_criticalsection.h b/angelscript/source/as_criticalsection.h
index 7915e46..b05c224 100644
--- a/angelscript/source/as_criticalsection.h
+++ b/angelscript/source/as_criticalsection.h
@@ -198,7 +198,7 @@ public:
     bool TryEnter();
 
 protected:
-    std::mutex* _mutex;
+    std::unique_ptr<std::mutex> _mutex;
 };
 
 class asCThreadReadWriteLock
@@ -215,7 +215,7 @@ public:
     void ReleaseShared();
     bool TryAcquireShared();
 protected:
-    std::shared_mutex* _mutex;
+    std::unique_ptr<std::shared_mutex> _mutex;
 };
 
 #endif
diff --git a/angelscript/source/as_thread.cpp b/angelscript/source/as_thread.cpp
index 25066d3..83f7e22 100644
--- a/angelscript/source/as_thread.cpp
+++ b/angelscript/source/as_thread.cpp
@@ -350,7 +350,7 @@ asCThreadCriticalSection::asCThreadCriticalSection()
 	InitializeCriticalSection(&cs);
 #endif
 #elif defined AS_STD_THREADS
-    _mutex = new std::mutex();
+    _mutex = std::make_unique<std::mutex>();
 #endif
 }
 
@@ -360,8 +360,6 @@ asCThreadCriticalSection::~asCThreadCriticalSection()
 	pthread_mutex_destroy(&cs);
 #elif defined AS_WINDOWS_THREADS
 	DeleteCriticalSection(&cs);
-#elif defined AS_STD_THREADS
-    delete _mutex;
 #endif
 }
 
@@ -419,7 +417,7 @@ asCThreadReadWriteLock::asCThreadReadWriteLock()
 	InitializeCriticalSection(&writeLock);
 #endif
 #elif defined AS_STD_THREADS
-    _mutex = new std::shared_mutex();
+    _mutex = std::make_unique<std::shared_mutex>();
 #endif
 }
 
@@ -430,8 +428,6 @@ asCThreadReadWriteLock::~asCThreadReadWriteLock()
 #elif defined AS_WINDOWS_THREADS
 	DeleteCriticalSection(&writeLock);
 	CloseHandle(readLocks);
-#elif defined AS_STD_THREADS
-    delete _mutex;
 #endif
 }