diff --git a/tests/testthat/test-add_footnote.r b/tests/testthat/test-add_footnote.r
index 32783c9..fc33204 100644
--- a/tests/testthat/test-add_footnote.r
+++ b/tests/testthat/test-add_footnote.r
@@ -2,6 +2,7 @@
 #####
 
 rtable <- data.frame(variable = c("mpg", "wt"), mean = c(20.091, 3.217), sd = c(6.027, 0.978))
+mdtable <- kable(rtable)
 htmltable_1 <- kable(rtable, format = "html")
 htmltable_2 <- kable(rtable, format = "html", caption = "Table", table.attr = "class = 'table table-striped table-hover'")
 htmltable_3 <- kable(rtable, row.names = T, format = "html", caption = "Table", table.attr = "class = 'table table-striped table-hover'")