diff --git a/build/check-json.js b/build/check-json.js
index debb71ba4b..828696d698 100755
--- a/build/check-json.js
+++ b/build/check-json.js
@@ -23,8 +23,8 @@ const jsonIconList = Object.keys(fontJson)
     const files = await fs.readdir(iconsDir)
     const svgIconList = files.map(file => file.slice(0,-4))
 
-    const onlyInJson = jsonIconList.filter(i => !svgIconList.includes(i))
-    const onlyInSvg = svgIconList.filter(i => !jsonIconList.includes(i))
+    const onlyInJson = jsonIconList.filter(icon => !svgIconList.includes(icon))
+    const onlyInSvg = svgIconList.filter(icon => !jsonIconList.includes(icon))
 
     if (onlyInJson.length !== 0 || onlyInSvg !== 0) {
       if (onlyInJson.length > 0) {