diff --git a/src/uvw/emitter.h b/src/uvw/emitter.h
index 5135b12c..a2f17d3e 100644
--- a/src/uvw/emitter.h
+++ b/src/uvw/emitter.h
@@ -70,7 +70,7 @@ struct error_event {
     explicit operator bool() const noexcept;
 
 private:
-    const int ec;
+    int ec;
 };
 
 /**