diff --git a/test/io/endpoint/bound_endpoint.rb b/test/io/endpoint/bound_endpoint.rb
index 60b9deb..baf24e7 100644
--- a/test/io/endpoint/bound_endpoint.rb
+++ b/test/io/endpoint/bound_endpoint.rb
@@ -74,7 +74,7 @@
 		
 		expect do
 			thread.join
-		end.to raise_exception(IOError, message: be =~ /stream closed in another thread/)
+		end.to raise_exception(IOError)
 	end
 	
 	with "timeouts" do