diff --git a/README.md b/README.md
index f1159781..a24197ef 100644
--- a/README.md
+++ b/README.md
@@ -977,10 +977,9 @@ function combine(val1, val2) {
 ### Don't over-optimize
 
 Modern browsers do a lot of optimization under-the-hood at runtime. A lot of
-times, if you are optimizing then you are just wasting your time. [There are good
-resources](https://github.com/petkaantonov/bluebird/wiki/Optimization-killers)
-for seeing where optimization is lacking. Target those in the meantime, until
-they are fixed if they can be.
+times, if you are optimizing then you are just wasting your time. Use browser
+developer tools and performance profiling to identify real bottlenecks before
+optimizing. Target those in the meantime, until they are fixed if they can be.
 
 **Bad:**