diff --git a/common/content/abbreviations.js b/common/content/abbreviations.js
index 4c0cb345..0dac5c3c 100644
--- a/common/content/abbreviations.js
+++ b/common/content/abbreviations.js
@@ -33,7 +33,7 @@ const Abbreviation = Class("Abbreviation", {
 }, {
     modeChar: function (_modes) {
         let result = "";
-        for ([, mode] in Iterator(_modes))
+        for (let [, mode] in Iterator(_modes))
             result += modes.getMode(mode).char;
         if (/^(ic|ci)$/(result))
             result = "!";