diff --git a/dll/win32/cryptdlg/cryptdlg.spec b/dll/win32/cryptdlg/cryptdlg.spec
index b417d0d8b80..0da7b293fcb 100644
--- a/dll/win32/cryptdlg/cryptdlg.spec
+++ b/dll/win32/cryptdlg/cryptdlg.spec
@@ -15,7 +15,7 @@
 15 stub CertSelectCertificateW
 16 stdcall CertViewPropertiesA(ptr)
 17 stdcall CertViewPropertiesW(ptr)
-18 stdcall -private DllRegisterServer()
-19 stdcall -private DllUnregisterServer()
+@ stdcall -private DllRegisterServer()
+@ stdcall -private DllUnregisterServer()
 20 stdcall GetFriendlyNameOfCertA(ptr ptr long)
 21 stdcall GetFriendlyNameOfCertW(ptr ptr long)