diff --git a/ext/bg/js/util.js b/ext/bg/js/util.js
index d1099262..b3e4feec 100644
--- a/ext/bg/js/util.js
+++ b/ext/bg/js/util.js
@@ -375,7 +375,7 @@ function dictTermsGroup(definitions, dictionaries) {
             expression: firstDef.expression,
             reading: firstDef.reading,
             reasons: firstDef.reasons,
-            score: groupDefs.reduce((x, y) => x.score > y.score ? x.score : y.score, Number.MIN_SAFE_INTEGER),
+            score: groupDefs.reduce((p, v) => v.score > p ? v.score : p, Number.MIN_SAFE_INTEGER),
             source: firstDef.source
         });
     }