diff --git a/intro.Rmd b/intro.Rmd
index d1d512e..1a1da62 100644
--- a/intro.Rmd
+++ b/intro.Rmd
@@ -246,7 +246,7 @@ This book isn't just the product of Hadley and Garrett, but is the result of man
 * Bill Behrman for his thoughtful reading of the entire book, and for trying 
   it out with his data science class at Stanford.
 
-* The \#rstats twitter community who reviewed all of the draft chapters
+* The \#rstats Twitter community who reviewed all of the draft chapters
   and provided tons of useful feedback.
 
 * Tal Galili for augmenting his dendextend package to support a section on clustering that did not make it into the final draft.
diff --git a/workflow-scripts.Rmd b/workflow-scripts.Rmd
index 5442cd0..de76e4b 100644
--- a/workflow-scripts.Rmd
+++ b/workflow-scripts.Rmd
@@ -52,7 +52,7 @@ knitr::include_graphics("screenshots/rstudio-diagnostic-warn.png")
 
 ## Exercises
 
-1.  Go to the RStudio Tips twitter account, <https://twitter.com/rstudiotips>
+1.  Go to the RStudio Tips Twitter account, <https://twitter.com/rstudiotips>
     and find one tip that looks interesting. Practice using it!
 
 1.  What other common mistakes will RStudio diagnostics report?  Read