diff --git a/test_cmds.txt b/test_cmds.txt
index 914a897..69501eb 100644
--- a/test_cmds.txt
+++ b/test_cmds.txt
@@ -1,2 +1 @@
 test -d /usr/local/lib/R/site-library/rNMR
-/usr/bin/xvfb-run R -e "library(rNMR)"