diff --git a/lib/machine-loader.js b/lib/machine-loader.js
index 5d5b0682..d9113eb5 100644
--- a/lib/machine-loader.js
+++ b/lib/machine-loader.js
@@ -493,8 +493,9 @@ function updateDiagnostics (deviceId, images) {
 }
 
 const updateFailedQRScans = (deviceId, frames) => {
+  const timestamp = (new Date()).toISOString()
   const directory = `${OPERATOR_DATA_DIR}/failedQRScans/${deviceId}/`
-  const filenames = _.map(no => `${no}.jpg`, _.range(0, _.size(frames)))
+  const filenames = _.map(no => `${timestamp}-${no}.jpg`, _.range(0, _.size(frames)))
   return updatePhotos(directory, _.zip(filenames, frames))
 }