diff --git a/dll/win32/initpki/initpki.spec b/dll/win32/initpki/initpki.spec
index e9db624e78a..2bfc451dc14 100644
--- a/dll/win32/initpki/initpki.spec
+++ b/dll/win32/initpki/initpki.spec
@@ -1,4 +1,4 @@
-@ stub DllInstall
+@ stub -private DllInstall
 @ stdcall -private DllRegisterServer()
 @ stdcall -private DllUnregisterServer()
 @ stub InitializePKI