diff --git a/R/eval-select.R b/R/eval-select.R
index 7ee2cc4..7f93e69 100644
--- a/R/eval-select.R
+++ b/R/eval-select.R
@@ -106,6 +106,7 @@
 #' # same as `enquo(arg)`.
 #'
 #' # give a better error message if you don't want empty selection
+#' # if supplying `error_arg`
 #' select_not_empty <- function(x, cols) {
 #'   eval_select(expr = enquo(cols), data = x, allow_empty = FALSE, error_arg = "cols")
 #' }
diff --git a/man/eval_select.Rd b/man/eval_select.Rd
index bced545..bbb14d3 100644
--- a/man/eval_select.Rd
+++ b/man/eval_select.Rd
@@ -145,6 +145,7 @@ my_function <- function(.x, .expr, ...) {
 # same as `enquo(arg)`.
 
 # give a better error message if you don't want empty selection
+# if supplying `error_arg`
 select_not_empty <- function(x, cols) {
   eval_select(expr = enquo(cols), data = x, allow_empty = FALSE, error_arg = "cols")
 }