diff --git a/R/util.R b/R/util.R
index 474f352..9d4eb14 100644
--- a/R/util.R
+++ b/R/util.R
@@ -108,7 +108,6 @@
     "\\usepackage{threeparttable}",
     "\\usepackage{threeparttablex}",
     "\\usepackage[normalem]{ulem}",
-    "\\usepackage[normalem]{ulem}",
     "\\usepackage[utf8]{inputenc}",
     "\\usepackage{makecell}",
     "\\usepackage{xcolor}"