diff --git a/src/doc/guide.md b/src/doc/guide.md
index 6d0fd54cd4c1..3cac1b4f4deb 100644
--- a/src/doc/guide.md
+++ b/src/doc/guide.md
@@ -1326,10 +1326,7 @@ upper bound is exclusive, though, so our loop will print `0` through `9`, not
 
 Rust does not have the "C style" `for` loop on purpose. Manually controlling
 each element of the loop is complicated and error prone, even for experienced C
-developers. There's an old joke that goes, "There are two hard problems in
-computer science: naming things, cache invalidation, and off-by-one errors."
-The joke, of course, being that the setup says "two hard problems" but then
-lists three things. This happens quite a bit with "C style" `for` loops.
+developers. 
 
 We'll talk more about `for` when we cover **iterator**s, later in the Guide.