diff --git a/dlls/wintrust/crypt.c b/dlls/wintrust/crypt.c
index 15b21a299f3..de2e95b4593 100644
--- a/dlls/wintrust/crypt.c
+++ b/dlls/wintrust/crypt.c
@@ -861,6 +861,17 @@ CRYPTCATMEMBER * WINAPI CryptCATPutMemberInfo(HANDLE catalog, WCHAR *filename,
     return NULL;
 }
 
+/***********************************************************************
+ *      CryptCATPersistStore  (WINTRUST.@)
+ */
+BOOL WINAPI CryptCATPersistStore(HANDLE catalog)
+{
+    FIXME("catalog %p, stub!\n", catalog);
+
+    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
+    return FALSE;
+}
+
 /***********************************************************************
  *      CryptCATOpen  (WINTRUST.@)
  */
diff --git a/dlls/wintrust/wintrust.spec b/dlls/wintrust/wintrust.spec
index a01d1dd93c9..2f369c169ce 100644
--- a/dlls/wintrust/wintrust.spec
+++ b/dlls/wintrust/wintrust.spec
@@ -34,7 +34,7 @@
 @ stdcall CryptCATGetMemberInfo(ptr wstr)
 @ stub CryptCATHandleFromStore
 @ stdcall CryptCATOpen(wstr long long long long)
-@ stub CryptCATPersistStore
+@ stdcall CryptCATPersistStore(ptr)
 @ stub CryptCATPutAttrInfo
 @ stub CryptCATPutCatAttrInfo
 @ stdcall CryptCATPutMemberInfo(ptr wstr wstr ptr long long ptr)
diff --git a/include/mscat.h b/include/mscat.h
index 3931b71596c..d3e9a7e560d 100644
--- a/include/mscat.h
+++ b/include/mscat.h
@@ -131,6 +131,7 @@ CRYPTCATATTRIBUTE * WINAPI CryptCATGetAttrInfo(HANDLE, CRYPTCATMEMBER *, LPWSTR)
 CRYPTCATATTRIBUTE * WINAPI CryptCATGetCatAttrInfo(HANDLE, LPWSTR);
 CRYPTCATMEMBER    * WINAPI CryptCATGetMemberInfo(HANDLE, LPWSTR);
 HANDLE    WINAPI CryptCATOpen(LPWSTR,DWORD,HCRYPTPROV,DWORD,DWORD);
+BOOL      WINAPI CryptCATPersistStore(HANDLE catalog);
 CRYPTCATMEMBER    * WINAPI CryptCATPutMemberInfo(HANDLE catalog, WCHAR *filename, WCHAR *member, GUID *subject, DWORD version, DWORD size, BYTE *data);
 
 #ifdef __cplusplus