diff --git a/core/src/main/java/com/google/zxing/qrcode/QRCodeReader.java b/core/src/main/java/com/google/zxing/qrcode/QRCodeReader.java
index 310a40926..ebc6b9a7d 100644
--- a/core/src/main/java/com/google/zxing/qrcode/QRCodeReader.java
+++ b/core/src/main/java/com/google/zxing/qrcode/QRCodeReader.java
@@ -139,6 +139,10 @@ public class QRCodeReader implements Reader {
       // Special case, where bottom-right module wasn't black so we found something else in the last row
       // Assume it's a square, so use height as the width
       right = left + (bottom - top);
+      if (right >= image.getWidth()) {
+        // Abort if that would not make sense -- off image
+        throw NotFoundException.getNotFoundInstance();
+      }
     }
 
     int matrixWidth = Math.round((right - left + 1) / moduleSize);