diff --git a/App/lib/core/Gen/Call/CallGenDispatch.vp b/App/lib/core/Gen/Call/CallGenDispatch.vp
index c064e9b..e6ca04a 100644
--- a/App/lib/core/Gen/Call/CallGenDispatch.vp
+++ b/App/lib/core/Gen/Call/CallGenDispatch.vp
@@ -365,6 +365,14 @@ novirtual class CallGenDispatch(CallGenBase.CallGenBase):
                                     mod_imp_td = trans._imported_modules
                                     mod_fi_td = trans._from_imports
                                 mod_td_ty = self.Gen.TypeGenResolve.resolve_annotation_type(pool, mod_td_ast, mod_imp_td, mod_fi_td, trans, 0)
+                    if mod_td_ty is None:
+                        # Final fallback: the shared typedef resolver also scans stdint/win32base.
+                        mod_imp_fb: str = None
+                        mod_fi_fb: str = None
+                        if trans is not None:
+                            mod_imp_fb = trans._imported_modules
+                            mod_fi_fb = trans._from_imports
+                        mod_td_ty = self.Gen.TypeGenResolve.resolve_typedef_or_map(pool, func_name, mod_imp_fb, mod_fi_fb, trans)
                     if mod_td_ty is not None and can == 1:
                         mt_arg_val: mlirlite.Value* = self.Gen.ExprGen.translate_value(builder, pool, mod, cargs.get(0), funcs_ptr, func_count, trans, mod_td_ty)
                         if mt_arg_val is not None: return self.Gen.CallGenCtor._translate_t_type_cast(pool, builder, mt_arg_val, mod_td_ty, cargs.get(0), trans)