diff --git a/dll/win32/vssapi/msvc.s b/dll/win32/vssapi/msvc.s
index 15121c10e8a..c65d6ae960e 100644
--- a/dll/win32/vssapi/msvc.s
+++ b/dll/win32/vssapi/msvc.s
@@ -20,4 +20,11 @@ DEFINE_THISCALL_WRAPPER ?Initialize@CVssWriter@@QAGJU_GUID@@PBGW4VSS_USAGE_TYPE@
 DEFINE_THISCALL_WRAPPER ?Subscribe@CVssWriter@@QAGJK@Z, _VSSAPI_CVssWriter_Subscribe@8
 DEFINE_THISCALL_WRAPPER ?Unsubscribe@CVssWriter@@QAGJXZ, _VSSAPI_CVssWriter_Unsubscribe@4
 
+MACRO(DEFINE_ALIAS, alias, orig)
+EXTERN &orig:PROC
+ALIAS <&alias> = <&orig>
+ENDM
+
+DEFINE_ALIAS ?CreateVssBackupComponents@@YGJPAPAVIVssBackupComponents@@@Z, _VSSAPI_CreateVssBackupComponents@4
+
 END
diff --git a/dll/win32/vssapi/vssapi.spec b/dll/win32/vssapi/vssapi.spec
index 6e3f1ade503..7698cba3372 100644
--- a/dll/win32/vssapi/vssapi.spec
+++ b/dll/win32/vssapi/vssapi.spec
@@ -7,7 +7,8 @@
 @ cdecl -arch=i386 ??1CVssWriter@@UAE@XZ(ptr) VSSAPI_CVssWriter_dtor
 @ stub ?AreComponentsSelected@CVssJetWriter@@IBG_NXZ
 @ stub ?AreComponentsSelected@CVssWriter@@IBG_NXZ
-@ stdcall ?CreateVssBackupComponents@@YGJPAPAVIVssBackupComponents@@@Z(ptr) VSSAPI_CreateVssBackupComponents
+@ stdcall -arch=i386 ?CreateVssBackupComponents@@YGJPAPAVIVssBackupComponents@@@Z(ptr) VSSAPI_CreateVssBackupComponents
+@ stdcall -arch=amd64 ?CreateVssBackupComponents@@YAJPEAPEAVIVssBackupComponents@@@Z(ptr) VSSAPI_CreateVssBackupComponents
 @ stub ?CreateVssExamineWriterMetadata@@YGJPAGPAPAVIVssExamineWriterMetadata@@@Z
 @ stub ?CreateVssSnapshotSetDescription@@YGJU_GUID@@JPAPAVIVssSnapshotSetDescription@@@Z
 @ stub ?GetBackupType@CVssJetWriter@@IBG?AW4_VSS_BACKUP_TYPE@@XZ