diff --git a/bootstraptest/test_io.rb b/bootstraptest/test_io.rb
index 019a82d9bd..55b7ce01cb 100644
--- a/bootstraptest/test_io.rb
+++ b/bootstraptest/test_io.rb
@@ -34,5 +34,5 @@ assert_finish 1, %q{
   sleep 0.1
   w << "ab"
   }
-  p r.gets("abab")
+  r.gets("abab")
 }