diff --git a/01-intro.Rmd b/01-intro.Rmd
index 757e00b..0152df5 100644
--- a/01-intro.Rmd
+++ b/01-intro.Rmd
@@ -11,7 +11,7 @@ Only once you have done that can we continue.
 As of today (`r Sys.Date()`), `rethomics` packages are not on CRAN, the official `R` package archive, yet.
 Therefore, we will install their developmental version.
 
-As a prerequisite, we need to install (once for all) `devtools` and load it:
+As a prerequisite, we need to install (once) `devtools` and load it:
 
 ```{r, eval=FALSE}
 install.packages("devtools")