diff --git a/src/async/context.cpp b/src/async/context.cpp
index 1dc9906..007a266 100644
--- a/src/async/context.cpp
+++ b/src/async/context.cpp
@@ -37,7 +37,7 @@
 
     // Data to share with the worker.
     context& ctx;
-    std::chrono::microseconds timeout{};
+    event_t::time_resolution timeout{};
 
     static task<> loop(context& ctx);
     static void wait_once(context& ctx);