diff --git a/dlls/advpack/advpack.c b/dlls/advpack/advpack.c
index f06c1250375..7b79a0ff66b 100644
--- a/dlls/advpack/advpack.c
+++ b/dlls/advpack/advpack.c
@@ -35,3 +35,19 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 
     return TRUE;
 }
+
+/***********************************************************************
+ *		LaunchINFSection  (SETUPAPI.@)
+ */
+void WINAPI LaunchINFSection( HWND hWnd, HINSTANCE hInst, LPCSTR cmdline, INT show )
+{
+    FIXME("%p %p %s %d\n", hWnd, hInst, debugstr_a(cmdline), show );
+}
+
+/***********************************************************************
+ *		LaunchINFSectionEx  (SETUPAPI.@)
+ */
+void WINAPI LaunchINFSectionEx( HWND hWnd, HINSTANCE hInst, LPCSTR cmdline, INT show )
+{
+    FIXME("%p %p %s %d\n", hWnd, hInst, debugstr_a(cmdline), show );
+}
diff --git a/dlls/advpack/advpack.spec b/dlls/advpack/advpack.spec
index 90817801d98..a71b3783f0a 100644
--- a/dlls/advpack/advpack.spec
+++ b/dlls/advpack/advpack.spec
@@ -13,8 +13,8 @@
 @ stub GetVersionFromFile
 @ stub GetVersionFromFileEx
 @ stub IsNTAdmin
-@ stub LaunchINFSection
-@ stub LaunchINFSectionEx
+@ stdcall LaunchINFSection(ptr ptr str long)
+@ stdcall LaunchINFSectionEx(ptr ptr str long)
 @ stub NeedReboot
 @ stub NeedRebootInit
 @ stub OpenINFEngine