diff --git a/src/tests/D3D12Test.h b/src/tests/D3D12Test.h
index 54b7c1b9..f3ed72c0 100644
--- a/src/tests/D3D12Test.h
+++ b/src/tests/D3D12Test.h
@@ -17,10 +17,12 @@
 
 #include "tests/GPGMMTest.h"
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #include <gpgmm_d3d12.h>
+
 #include "gpgmm/d3d12/D3D12Platform.h"
 
 #define ASSERT_FAILED(expr) ASSERT_TRUE(FAILED(expr))
@@ -33,14 +35,8 @@
 
 namespace gpgmm::d3d12 {
 
-    struct RESOURCE_ALLOCATOR_DESC;
-    struct RESIDENCY_MANAGER_DESC;
-
     class Caps;
 
-    GPGMM_INTERFACE IResourceAllocator;
-    GPGMM_INTERFACE IResidencyManager;
-
     D3D12_MESSAGE_SEVERITY GetMessageSeverity(MessageSeverity MessageSeverity);
     long GetRefCount(IUnknown* unknown);