diff --git a/vignettes/rxode2-syntax.Rmd b/vignettes/rxode2-syntax.Rmd
index d356a8394..026a6a1f2 100644
--- a/vignettes/rxode2-syntax.Rmd
+++ b/vignettes/rxode2-syntax.Rmd
@@ -13,6 +13,7 @@ vignette: >
 knitr::opts_chunk$set(
   collapse = TRUE,
   comment = "#>")
+library(rxode2)
 ```
 
 ## Introduction