diff --git a/src/background/audio.ts b/src/background/audio.ts
index f267177..98e2909 100644
--- a/src/background/audio.ts
+++ b/src/background/audio.ts
@@ -35,7 +35,7 @@ ipcMain.on('update-recorder', updateRecorder);
 
 // Split Buffer into an array of len-sized Buffers.
 function bufSplit(buf: Buffer, len: number): Array<Buffer> {
-    let chunks = [];
+    const chunks = [];
     let i = 0;
     let L = len;