diff --git a/vignettes/Supporting_additional_objects.Rmd b/vignettes/Supporting_additional_objects.Rmd
index e6d2aa05..47e46730 100644
--- a/vignettes/Supporting_additional_objects.Rmd
+++ b/vignettes/Supporting_additional_objects.Rmd
@@ -26,7 +26,9 @@ involves two required elements and one optional element.
 If you are adding skim support to a package you will also need to add `skimr`
 to the list of imports. Note that in this vignette the actual analysis will
 not be run because that would require importing the `sf` package just for this
-example.  However to run it on your own you can install `sf` and then run
+example.  However to run it on your own you can install `sf` and then run the
+following code.  Note that code in this vignette was not evaluated when
+rendering the vignette in order to avoid forcing installation of sf.
 
 ```{r, eval = FALSE}
 library(sf)
@@ -35,7 +37,8 @@ nc <- st_read(system.file("shape/nc.shp", package = "sf"))
 
 ```
 Linking to GEOS 3.7.2, GDAL 2.4.2, PROJ 5.2.0
-Reading layer `nc' from data source `/Users/elinwaring/Library/R/3.6/library/sf/shape/nc.shp' using driver `ESRI Shapefile'
+Reading layer `nc' from data source 
+`/path/to/library/sf/shape/nc.shp' using driver `ESRI Shapefile'
 Simple feature collection with 100 features and 14 fields
 geometry type:  MULTIPOLYGON
 dimension:      XY
@@ -197,8 +200,8 @@ Group variables            None
 1 geometry              0             1      100   100   101
 ```
 
-Sharing these functions within a separate package requires an export. The simplest
-way to do this is with Roxygen.
+Sharing these functions within a separate package requires an export. 
+The simplest way to do this is with Roxygen.
 
 ```{r, eval = FALSE}
 #' Skimming functions for `sfc_MULTIPOLYGON` objects.