diff --git a/lib/traces/provider/async/task.rb b/lib/traces/provider/async/task.rb
index 27a8276..80b9d6a 100644
--- a/lib/traces/provider/async/task.rb
+++ b/lib/traces/provider/async/task.rb
@@ -15,9 +15,11 @@ def schedule(&block)
 		super do
 			Traces.trace_context = trace_context
 			
-			attributes = {
-				"annotation" => self.annotation,
-			}
+			if annotation = self.annotation
+				attributes = {
+					"annotation" => annotation
+				}
+			end
 			
 			Traces.trace('async.task', attributes: attributes) do
 				yield