diff --git a/workflow-projects.Rmd b/workflow-projects.Rmd
index bc537de..fb08a66 100644
--- a/workflow-projects.Rmd
+++ b/workflow-projects.Rmd
@@ -114,7 +114,7 @@ write_csv(diamonds, "diamonds.csv")
 
 Quit RStudio. Inspect the folder associated with your project --- notice the `.Rproj` file. Double-click that file to re-open the project. Notice you get back to where you left off: it's the same working directory and command history, and all the files you were working on are still open. Because you followed my instructions above, you will, however, have a completely fresh environment, guaranteeing that you're starting with a clean slate.
 
-In your favorite OS-specific way, search your computer for `diamonds.pdf` and you will find the PDF (no surprise) but _also the script that created it_ (`diamonds.r`). This is huge win! One day you will want to remake a figure or just understand where it came from. If you rigorously save figures to files __with R code__ and never with the mouse or the clipboard, you will be able to reproduce old work with ease!
+In your favorite OS-specific way, search your computer for `diamonds.pdf` and you will find the PDF (no surprise) but _also the script that created it_ (`diamonds.R`). This is huge win! One day you will want to remake a figure or just understand where it came from. If you rigorously save figures to files __with R code__ and never with the mouse or the clipboard, you will be able to reproduce old work with ease!
 
 ## Summary