diff --git a/test/blackbox-tests/test-cases/cpp-std-ocaml5.t/run.t b/test/blackbox-tests/test-cases/cpp-std-ocaml5.t/run.t
index 99e7a64f7d9..d106ce82ee9 100644
--- a/test/blackbox-tests/test-cases/cpp-std-ocaml5.t/run.t
+++ b/test/blackbox-tests/test-cases/cpp-std-ocaml5.t/run.t
@@ -15,5 +15,5 @@
   >   (flags -std=c++98 :standard)))
   > EOF
 
-  $ dune exec ./cpp11.exe 2>/dev/null 
+  $ dune exec ./cpp11.exe
   Hi from C++11