diff --git a/NEWS.md b/NEWS.md
index c20611f..8bf3a77 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,4 +1,4 @@
-# vistime 1.2.0 (2021-02-18)
+# vistime 1.2.0 (2021-02-19)
 
 ## Breaking Changes
 - `highcharter` is no more installed by default when you install `vistime`.
@@ -8,11 +8,11 @@
 
 ## New features
 - Added mouse zooming capability to `hc_vistim()e`
-- Split the `README.md` into three vignettes<!--:
+- Split the `README.md` into three vignettes:
   - [`vistime()` manual](https://CRAN.R-project.org/package=vistime/vignettes/vistime-vignette.html)
-  - [`gg_vistime()` manual]( https://CRAN.R-project.org/package=vistime/vignettes/gg_vistime-vignette.html)
-  - [`hc_vistime()` manual]( https://CRAN.R-project.org/package=vistime/vignettes/hc_vistime-vignette.html)
-  -->
+  - [`gg_vistime()` manual](https://CRAN.R-project.org/package=vistime/vignettes/gg_vistime-vignette.html)
+  - [`hc_vistime()` manual](https://CRAN.R-project.org/package=vistime/vignettes/hc_vistime-vignette.html)
+
 
 ## Minor adjustments
 - Updated documentation
diff --git a/R/hc_vistime.R b/R/hc_vistime.R
index 88f251c..99cac72 100644
--- a/R/hc_vistime.R
+++ b/R/hc_vistime.R
@@ -70,6 +70,11 @@ hc_vistime <- function(data,
                        optimize_y = TRUE, title = NULL,
                        show_labels = TRUE, ...) {
 
+  if (!requireNamespace("highcharter", quietly = TRUE)) {
+    stop("The `highcharter` package is required for creating `hc_vistime()` objects.",
+         call. = FALSE)
+  }
+
   checked_dat <- validate_input(data, col.event, col.start, col.end, col.group, col.color,
                                 col.fontcolor = NULL, col.tooltip, optimize_y, linewidth = 0, title,
                                 show_labels, background_lines = 0, list(...))
diff --git a/R/plot_highchart.R b/R/plot_highchart.R
index bae23ca..8d64fcc 100644
--- a/R/plot_highchart.R
+++ b/R/plot_highchart.R
@@ -19,11 +19,6 @@
 #' }
 plot_highchart <- function(data, title, show_labels){
 
-  if (!requireNamespace("highcharter", quietly = TRUE)) {
-    stop("The `highcharter` package is required for creating `hc_vistime()` objects.",
-         call. = FALSE)
-  }
-
   # let an event be 1/50th of total timeline range
   data$end <- with(data, ifelse(start != end, end, end + diff(range(c(start, end)))/50))
 
diff --git a/README.md b/README.md
index 850dd7d..b8c1fea 100644
--- a/README.md
+++ b/README.md
@@ -106,13 +106,11 @@ During COVID-19 2020, [wlhamilton](https://github.com/wlhamilton) used `gg_visti
 
 <img src="inst/img/ward_movements.png" width="500" height="283"/>
 
-<!--
 ## 4. Usage and documentation
 
 There is a vignette for each of the three functions of the package where they are explained in detail:
 
 - `vistime()` for interactive **Plotly** output: [Link to manual](https://CRAN.R-project.org/package=vistime/vignettes/vistime-vignette.html)
-- `gg_vistime()` for static **ggplot2** output: [Link to manual]( https://CRAN.R-project.org/package=vistime/vignettes/gg_vistime-vignette.html)
-- `hc_vistime()` for interactive **Highcharts** output: [Link to manual]( https://CRAN.R-project.org/package=vignettes/hc_vistime-vignette.html)
+- `gg_vistime()` for static **ggplot2** output: [Link to manual](https://CRAN.R-project.org/package=vistime/vignettes/gg_vistime-vignette.html)
+- `hc_vistime()` for interactive **Highcharts** output: [Link to manual](https://CRAN.R-project.org/package=vignettes/hc_vistime-vignette.html)
 
--->