diff --git a/shared/sx/async_eval.py b/shared/sx/async_eval.py
index 395b10d..7b5d78d 100644
--- a/shared/sx/async_eval.py
+++ b/shared/sx/async_eval.py
@@ -1159,12 +1159,14 @@ async def _aser(expr: Any, env: dict[str, Any], ctx: RequestContext) -> Any:
         if name.startswith("html:"):
             return await _aser_call(name[5:], expr[1:], env, ctx)
 
-        # Component call — expand macros, serialize regular components
+        # Component call — expand macros, expand known components, serialize unknown
         if name.startswith("~"):
             val = env.get(name)
             if isinstance(val, Macro):
                 expanded = _expand_macro(val, expr[1:], env)
                 return await _aser(expanded, env, ctx)
+            if isinstance(val, Component):
+                return await _aser_component(val, expr[1:], env, ctx)
             return await _aser_call(name, expr[1:], env, ctx)
 
         # Serialize-mode special/HO forms (checked BEFORE HTML_TAGS