diff --git a/src/worker/worker.ts b/src/worker/worker.ts
index 98e3c78..dc9c0f0 100644
--- a/src/worker/worker.ts
+++ b/src/worker/worker.ts
@@ -10,7 +10,7 @@ function detectWithJsQR(imageData : ImageData) : Array<DetectedBarcode> {
       imageData.data, 
       imageData.width, 
       imageData.height, 
-      { inversionAttempts: "dontInvert" }
+      { inversionAttempts: "attemptBoth" }
     );
 
     if (qrcode === null || qrcode.data === "") {