diff --git a/dlls/urlmon/binding.c b/dlls/urlmon/binding.c
index 4b8651c60f6..cd843b42e3d 100644
--- a/dlls/urlmon/binding.c
+++ b/dlls/urlmon/binding.c
@@ -1789,7 +1789,7 @@ static HRESULT start_binding(IMoniker *mon, Binding *binding_ctx, LPCWSTR url, I
         report_data(binding, 0, 0, 0);
     }else {
         hres = IInternetProtocol_Start(binding->protocol, url, PROTSINK(binding),
-                 BINDINF(binding), 0, 0);
+                 BINDINF(binding), PI_APARTMENTTHREADED, 0);
 
         TRACE("start ret %08x\n", hres);