diff --git a/R/tm_landing_popup.R b/R/tm_landing_popup.R
index 9e8acc8dd..40c77efa2 100644
--- a/R/tm_landing_popup.R
+++ b/R/tm_landing_popup.R
@@ -12,7 +12,7 @@
 #' app1 <- teal::init(
 #'   data = teal.data::dataset("iris", iris),
 #'   modules = teal::modules(
-#'     teal.modules.general::tm_front_page('A')
+#'     teal.modules.general::tm_front_page("A")
 #'   ),
 #'   extra_server = teal.modules.general::landing_popup(
 #'     title = "Welcome",
@@ -27,12 +27,12 @@
 #' app2 <- teal::init(
 #'   data = teal.data::dataset("iris", iris),
 #'   modules = teal::modules(
-#'     teal.modules.general::tm_front_page('A')
+#'     teal.modules.general::tm_front_page("A")
 #'   ),
 #'   extra_server = teal.modules.general::landing_popup(
 #'     title = "Welcome",
 #'     content = div(tags$b("A place for the welcome message or a disclaimer statement.", style = "color: red;")),
-#'     buttons = tagList(modalButton("Proceed"), actionButton('close', 'Read more', onclick  = "window.open('http://google.com', '_blank')"))
+#'     buttons = tagList(modalButton("Proceed"), actionButton("close", "Read more", onclick = "window.open('http://google.com', '_blank')"))
 #'   )
 #' )
 #'
@@ -40,12 +40,11 @@
 #'   shinyApp(app2$ui, app2$server)
 #' }
 #'
-#'
 #' @export
 landing_popup <- function(title = NULL, content = NULL, buttons = modalButton("Accept")) {
   checkmate::assert_string(title, null.ok = TRUE)
-  checkmate::assert_multi_class(content, classes = c('character', 'shiny.tag', 'shiny.tag.list', 'html'), null.ok = TRUE)
-  checkmate::assert_multi_class(buttons, classes = c('shiny.tag', 'shiny.tag.list'), null.ok = TRUE)
+  checkmate::assert_multi_class(content, classes = c("character", "shiny.tag", "shiny.tag.list", "html"), null.ok = TRUE)
+  checkmate::assert_multi_class(buttons, classes = c("shiny.tag", "shiny.tag.list"), null.ok = TRUE)
 
   showModal(
     modalDialog(