diff --git a/stats/src/classifier.ts b/stats/src/classifier.ts
index daefc20..7687fc9 100644
--- a/stats/src/classifier.ts
+++ b/stats/src/classifier.ts
@@ -533,6 +533,7 @@ export function computeGreaterSetupMoves(gen: Generation) {
       ((m.boosts.atk >= 1 && m.boosts.spe && m.boosts.spe >= 1) || m.boosts.atk >= 2)) ||
     (m.boosts.spa &&
       ((m.boosts.spa >= 1 && m.boosts.spe && m.boosts.spe >= 1) || m.boosts.spa >= 2))
+    // Shell Smash is intentionally left off this list
   ) && m.id !== 'shellsmash').map(m => m.id);
   // Attacking moves that have a high Base Power (80 or above) and have a high
   // likelihood of boosting (at least 50%)
diff --git a/stats/src/test/classifier.test.ts b/stats/src/test/classifier.test.ts
index 631224a..edd4315 100644
--- a/stats/src/test/classifier.test.ts
+++ b/stats/src/test/classifier.test.ts
@@ -5,6 +5,9 @@ import * as classifier from '../classifier';
 
 const GEN = new Generations(Dex).get(6);
 
+/**
+  * Returns set of items in set `a` that are not in set `b`.
+  */
 function getDifference(a: Set<ID>, b: Set<ID>) {
   return new Set(
     [...a].filter((value) => !b.has(value))