diff --git a/javascript/ql/src/Performance/ReDoS.ql b/javascript/ql/src/Performance/ReDoS.ql
index efba285d3d7..51151d53966 100644
--- a/javascript/ql/src/Performance/ReDoS.ql
+++ b/javascript/ql/src/Performance/ReDoS.ql
@@ -86,7 +86,6 @@ import javascript
 class RegExpRoot extends RegExpTerm {
   RegExpParent parent;
 
-  // RegExpTerm is abstract, so do not extend it.
   RegExpRoot() {
     exists(RegExpAlt alt |
       alt.isRootTerm() and