diff --git a/dll/win32/syssetup/syssetup.spec b/dll/win32/syssetup/syssetup.spec
index 361a41d367e..1416a967471 100644
--- a/dll/win32/syssetup/syssetup.spec
+++ b/dll/win32/syssetup/syssetup.spec
@@ -53,7 +53,7 @@
 @ stub SetupGetProductType
 @ stub SetupGetSetupInfo
 @ stub SetupGetValidEula
-@ stub SetupInfObjectInstallActionW
+@ stdcall SetupInfObjectInstallActionW() SETUPAPI.InstallHinfSectionW
 @ stub SetupInstallCatalog
 @ stub SetupMapTapiToIso
 @ stub SetupOobeBnk