diff --git a/NEWS.md b/NEWS.md
index c88aae4..ac133a8 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -3,6 +3,8 @@
 ## Bug fixes
 
 * Fix tests expecting fixed number of phenotypes.
+* Vignette
+  - `HPOExplorer`: Fix rendering of final plot.
 
 # HPOExplorer 1.0.3
 
diff --git a/man/hpo_to_matrix.Rd b/man/hpo_to_matrix.Rd
index 5c702ba..8f9b5f8 100644
--- a/man/hpo_to_matrix.Rd
+++ b/man/hpo_to_matrix.Rd
@@ -28,7 +28,7 @@ to gene annotations.}
 
 \item{formula}{A formula of the form LHS ~ RHS to cast, see Details.}
 
-\item{fun.aggregate}{Should the data be aggregated before casting? If the formula doesn't identify a single observation for each cell, then aggregation defaults to \code{length} with a message.
+\item{fun.aggregate}{Should the data be aggregated before casting? If the formula doesn't identify a single observation for each cell, then aggregation defaults to \code{length} with a warning of class 'dt_missing_fun_aggregate_warning'.
 
   To use multiple aggregation functions, pass a \code{list}; see Examples. }
 
@@ -36,7 +36,7 @@ to gene annotations.}
 
   Cast multiple \code{value.var} columns simultaneously by passing their names as a \code{character} vector. See Examples. }
 
-\item{fill}{Value with which to fill missing cells. If \code{fun.aggregate} is present, takes the value by applying the function on a 0-length vector.}
+\item{fill}{Value with which to fill missing cells. If \code{fill=NULL} and missing cells are present, then \code{fun.aggregate} is used on a 0-length vector to obtain a fill value.}
 
 \item{run_cor}{Return a matrix of pairwise correlations.}
 
diff --git a/vignettes/HPOExplorer.Rmd b/vignettes/HPOExplorer.Rmd
index 1949d38..f5a011f 100644
--- a/vignettes/HPOExplorer.Rmd
+++ b/vignettes/HPOExplorer.Rmd
@@ -80,7 +80,7 @@ The `colour_var` argument is where you choose the column name from the `phenos`
 ```{r plot, warning = FALSE, message = FALSE, fig.width = 9, fig.height = 7}
 plt <- make_network_plot(phenos = phenos, 
                          colour_var = "ontLvl_geneCount_ratio")
-methods::show(plt)
+plt$plot
 ```