diff --git a/R/error.R b/R/error.R
index e8b1c881..c0f3834e 100644
--- a/R/error.R
+++ b/R/error.R
@@ -38,16 +38,3 @@ not_tsibble <- function(x) {
     abort(sprintf("%s is not a tsibble.", deparse(substitute(x))))
   }
 }
-
-pkg_not_available <- function(pkg, min_version = NULL) {
-  pkg_lgl <- requireNamespace(pkg, quietly = TRUE)
-  if (!pkg_lgl) {
-    abort(sprintf("Package `%s` required.\nPlease install and try again.", pkg))
-  } else if (pkg_lgl && is_null(min_version)) {
-    return()
-  } else if (utils::packageVersion(pkg) < min_version) {
-    abort(sprintf(
-      "Package `%s` (>= v%s) required.\nPlease install and try again.", 
-      pkg, min_version))
-  }
-}
diff --git a/R/filter-index.R b/R/filter-index.R
index ac411957..2f2e85ae 100644
--- a/R/filter-index.R
+++ b/R/filter-index.R
@@ -137,9 +137,7 @@ end_window.numeric <- function(x, y = NULL, ...) {
 
 #' @export
 start_window.difftime <- function(x, y = NULL, ...) {
-  if (!requireNamespace("hms", quietly = TRUE)) {
-    abort("Package `hms` required.\nPlease install and try again.")
-  }
+  check_installed("hms")
   if (is_null(y)) {
     hms::as_hms(min(x))
   } else {
diff --git a/R/holiday.R b/R/holiday.R
index 8f478931..a192e07f 100644
--- a/R/holiday.R
+++ b/R/holiday.R
@@ -22,7 +22,7 @@ globalVariables("holiday")
 #' holiday_aus(2016, state = "VIC")
 #' holiday_aus(2013:2016, state = "ACT")
 holiday_aus <- function(year, state = "national") {
-  pkg_not_available("timeDate")
+  check_installed("timeDate")
   if (!is_integerish(year)) {
     abort("Argument `year` must be integers.")
   }
diff --git a/R/scales.R b/R/scales.R
index a6403a00..466b1f62 100644
--- a/R/scales.R
+++ b/R/scales.R
@@ -13,8 +13,8 @@
 NULL
 
 scale_fun_pkg_check <- function() {
-  pkg_not_available("ggplot2", "3.3.0")
-  pkg_not_available("scales", "1.1.0")
+  check_installed("ggplot2", version = "3.3.0")
+  check_installed("scales", version = "1.1.0")
 }
 
 scale_type.yearquarter <- function(x) c("yearquarter", "date", "continuous")