diff --git a/tracker/tracker-axios/src/index.ts b/tracker/tracker-axios/src/index.ts
index d11b6c457..2b2049818 100644
--- a/tracker/tracker-axios/src/index.ts
+++ b/tracker/tracker-axios/src/index.ts
@@ -105,7 +105,7 @@ export default function(opts: Partial<Options> = {}) {
 
         // TODO: type safe axios headers
         if (typeof res.headers === 'object') {
-          Object.entries(res.headers as Record<string, string>).forEach(([v, n]) => { if (!isHIgnoring(n)) resHs[n] = v })
+          Object.entries(res.headers as Record<string, string>).forEach(([n, v]) => { if (!isHIgnoring(n)) resHs[n] = v })
         }
       }