diff --git a/R/check_itemscale.R b/R/check_itemscale.R
index 8d8b71082..5aa704618 100644
--- a/R/check_itemscale.R
+++ b/R/check_itemscale.R
@@ -40,8 +40,6 @@
 #' - Briggs SR, Cheek JM (1986) The role of factor analysis in the development
 #'   and evaluation of personality scales. Journal of Personality, 54(1),
 #'   106-148. doi: 10.1111/j.1467-6494.1986.tb00391.x
-#' - Trochim WMK (2008) Types of Reliability.
-#'   ([web](https://conjointly.com/kb/types-of-reliability/))
 #'
 #' @examplesIf require("parameters") && require("psych")
 #' # data generation from '?prcomp', slightly modified
@@ -82,9 +80,9 @@ check_itemscale <- function(x) {
       Mean = vapply(items, mean, numeric(1), na.rm = TRUE),
       SD = vapply(items, stats::sd, numeric(1), na.rm = TRUE),
       Skewness = vapply(items, function(i) as.numeric(datawizard::skewness(i)), numeric(1)),
-      "Difficulty" = item_difficulty(items)$Difficulty,
-      "Discrimination" = .item_discr,
-      "alpha if deleted" = .item_alpha,
+      Difficulty = item_difficulty(items)$Difficulty,
+      Discrimination = .item_discr,
+      `alpha if deleted` = .item_alpha,
       stringsAsFactors = FALSE,
       check.names = FALSE
     )
diff --git a/man/check_itemscale.Rd b/man/check_itemscale.Rd
index 7fa487ab5..7f790b1d2 100644
--- a/man/check_itemscale.Rd
+++ b/man/check_itemscale.Rd
@@ -61,7 +61,5 @@ check_itemscale(pca)
 \item Briggs SR, Cheek JM (1986) The role of factor analysis in the development
 and evaluation of personality scales. Journal of Personality, 54(1),
 106-148. doi: 10.1111/j.1467-6494.1986.tb00391.x
-\item Trochim WMK (2008) Types of Reliability.
-(\href{https://conjointly.com/kb/types-of-reliability/}{web})
 }
 }