diff --git a/strings.qmd b/strings.qmd
index 57378a8..ac224bd 100644
--- a/strings.qmd
+++ b/strings.qmd
@@ -38,6 +38,7 @@ This is particularly useful if you use RStudio because typing `str_` will trigge
 
 ```{r}
 #| echo: false
+#| fig-alt: "`str_c` typed into the RStudio console with the autocomplete tooltip shown on top, which lists functions beginning with `str_c`. The funtion signature and beginning of the man page for the highlighted function from the autocomplete list are shown in a panel to its right."
 
 knitr::include_graphics("screenshots/stringr-autocomplete.png")
 ```