diff --git a/README.Rmd b/README.Rmd
index 371c2d06..969f16d7 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -91,7 +91,7 @@ The main function of `{rix}` is called `rix()`. `rix()` has several arguments:
 For example:
 
 ```{r, eval = FALSE}
-rix(r_ver = "current", pkgs = c("dplyr", "chronicler"), ide = "rstudio")
+rix(r_ver = "current", r_pkgs = c("dplyr", "chronicler"), ide = "rstudio")
 ```
 
 The call above writes a `default.nix` file in the current working directory. This
@@ -104,7 +104,7 @@ install normally) would not recognize the R installed in the Nix environment.
 This is not the case for other IDEs such as VS code or Emacs. Another example:
 
 ```{r, eval = FALSE}
-rix(r_ver = "4.1.0", pkgs = c("dplyr", "chronicler"), ide = "code")
+rix(r_ver = "4.1.0", r_pkgs = c("dplyr", "chronicler"), ide = "code")
 ```
 
 This call will generate a `default.nix` that installs R version 4.1.0, with the `{dplyr}`
diff --git a/README.md b/README.md
index 20f59b41..cbf50309 100644
--- a/README.md
+++ b/README.md
@@ -87,7 +87,7 @@ arguments:
 For example:
 
 ``` r
-rix(r_ver = "current", pkgs = c("dplyr", "chronicler"), ide = "rstudio")
+rix(r_ver = "current", r_pkgs = c("dplyr", "chronicler"), ide = "rstudio")
 ```
 
 The call above writes a `default.nix` file in the current working
@@ -102,7 +102,7 @@ This is not the case for other IDEs such as VS code or Emacs. Another
 example:
 
 ``` r
-rix(r_ver = "4.1.0", pkgs = c("dplyr", "chronicler"), ide = "code")
+rix(r_ver = "4.1.0", r_pkgs = c("dplyr", "chronicler"), ide = "code")
 ```
 
 This call will generate a `default.nix` that installs R version 4.1.0,