diff --git a/Project/GNU/Library/test/Makefile.am b/Project/GNU/Library/test/Makefile.am
index 3bae8324b..6bf9d6718 100644
--- a/Project/GNU/Library/test/Makefile.am
+++ b/Project/GNU/Library/test/Makefile.am
@@ -2,6 +2,8 @@ AUTOMAKE_OPTIONS = foreign subdir-objects
 
 AM_TESTS_FD_REDIRECT = 9>&2
 
+AM_CXXFLAGS = -std=c++11
+
 TESTS = \
     trace.sh \
     s3.sh \