diff --git a/dlls/wintrust/softpub.c b/dlls/wintrust/softpub.c
index 36766529965..a9b5464869c 100644
--- a/dlls/wintrust/softpub.c
+++ b/dlls/wintrust/softpub.c
@@ -27,6 +27,19 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(wintrust);
 
+HRESULT WINAPI SoftpubDefCertInit(CRYPT_PROVIDER_DATA *data)
+{
+    HRESULT ret = S_FALSE;
+
+    TRACE("(%p)\n", data);
+
+    if (data->padwTrustStepErrors &&
+     !data->padwTrustStepErrors[TRUSTERROR_STEP_FINAL_WVTINIT])
+        ret = S_OK;
+    TRACE("returning %08x\n", ret);
+    return ret;
+}
+
 HRESULT WINAPI SoftpubInitialize(CRYPT_PROVIDER_DATA *data)
 {
     HRESULT ret = S_FALSE;
diff --git a/dlls/wintrust/wintrust.spec b/dlls/wintrust/wintrust.spec
index a28257dcd71..078e5bba910 100644
--- a/dlls/wintrust/wintrust.spec
+++ b/dlls/wintrust/wintrust.spec
@@ -59,7 +59,7 @@
 @ stdcall SoftpubAuthenticode(ptr)
 @ stdcall SoftpubCheckCert(ptr long long long)
 @ stdcall SoftpubCleanup(ptr)
-@ stub SoftpubDefCertInit
+@ stdcall SoftpubDefCertInit(ptr)
 @ stdcall SoftpubDllRegisterServer()
 @ stdcall SoftpubDllUnregisterServer()
 @ stub SoftpubDumpStructure