diff --git a/dlls/vssapi/vssapi.spec b/dlls/vssapi/vssapi.spec
index c759c111638..779dab1ad5a 100644
--- a/dlls/vssapi/vssapi.spec
+++ b/dlls/vssapi/vssapi.spec
@@ -29,8 +29,8 @@
 @ stub ?GetSnapshotDeviceName@CVssJetWriter@@IBGJPBGPAPBG@Z
 @ stub ?GetSnapshotDeviceName@CVssWriter@@IBGJPBGPAPBG@Z
 @ stub ?Initialize@CVssJetWriter@@QAGJU_GUID@@PBG_N211K@Z
-@ thiscall -arch=i386 ?Initialize@CVssWriter@@QAGJU_GUID@@PBGW4VSS_USAGE_TYPE@@W4VSS_SOURCE_TYPE@@W4_VSS_APPLICATION_LEVEL@@KW4VSS_ALTERNATE_WRITER_STATE@@_N@Z(ptr ptr wstr long long long long long long wstr) VSSAPI_CVssWriter_Initialize
-@ cdecl -arch=win64 ?Initialize@CVssWriter@@QEAAJU_GUID@@PEBGW4VSS_USAGE_TYPE@@W4VSS_SOURCE_TYPE@@W4_VSS_APPLICATION_LEVEL@@KW4VSS_ALTERNATE_WRITER_STATE@@_N1@Z(ptr ptr wstr long long long long long long wstr) VSSAPI_CVssWriter_Initialize
+@ thiscall -arch=i386 ?Initialize@CVssWriter@@QAGJU_GUID@@PBGW4VSS_USAGE_TYPE@@W4VSS_SOURCE_TYPE@@W4_VSS_APPLICATION_LEVEL@@KW4VSS_ALTERNATE_WRITER_STATE@@_N@Z(ptr int128 wstr long long long long long long wstr) VSSAPI_CVssWriter_Initialize
+@ cdecl -arch=win64 ?Initialize@CVssWriter@@QEAAJU_GUID@@PEBGW4VSS_USAGE_TYPE@@W4VSS_SOURCE_TYPE@@W4_VSS_APPLICATION_LEVEL@@KW4VSS_ALTERNATE_WRITER_STATE@@_N1@Z(ptr int128 wstr long long long long long long wstr) VSSAPI_CVssWriter_Initialize
 @ stub ?InstallAlternateWriter@CVssWriter@@QAGJU_GUID@@0@Z
 @ stub ?IsBootableSystemStateBackedUp@CVssJetWriter@@IBG_NXZ
 @ stub ?IsBootableSystemStateBackedUp@CVssWriter@@IBG_NXZ