diff --git a/lustre/tests/acceptance-small.sh b/lustre/tests/acceptance-small.sh
index 4a7142fb568133461c3d8c1aa420247c1c379ee9..9d9ef5ce0a406ded1c42b6f44a6acb175d43f2a4 100755
--- a/lustre/tests/acceptance-small.sh
+++ b/lustre/tests/acceptance-small.sh
@@ -262,6 +262,7 @@ for NAME in $CONFIGS; do
 		LFSCK="done"
 	fi
 
+	[ "$NETTYPE" = "tcp" ] || LIBLUSTRE=no # bug 15660
 	if [ "$LIBLUSTRE" != "no" ]; then
 	        title liblustre
 		assert_env MGSNID MOUNT2