diff --git a/pkgs/racket-pkgs/racket-doc/scribblings/guide/concurrency.scrbl b/pkgs/racket-pkgs/racket-doc/scribblings/guide/concurrency.scrbl
index 3c08e1df04..ba2e8fe7e4 100644
--- a/pkgs/racket-pkgs/racket-doc/scribblings/guide/concurrency.scrbl
+++ b/pkgs/racket-pkgs/racket-doc/scribblings/guide/concurrency.scrbl
@@ -22,7 +22,7 @@ the sense of using multiple hardware processors.  See
 
 @section{Threads}
 
-To execute a procedure concurrrently, use @racket[thread].  The
+To execute a procedure concurrently, use @racket[thread].  The
 following example creates two new threads from the main thread:
 
 @racketblock[