diff --git a/services/history-v1/storage/lib/backupVerifier.mjs b/services/history-v1/storage/lib/backupVerifier.mjs
index 503aa07cc8..ba1b1bafab 100644
--- a/services/history-v1/storage/lib/backupVerifier.mjs
+++ b/services/history-v1/storage/lib/backupVerifier.mjs
@@ -80,17 +80,23 @@ export async function verifyBlobs(historyId, hashes, projectCache) {
       })
     } catch (err) {
       if (err instanceof NotFoundError) {
-        throw new BackupCorruptedError('missing blob', { path, hash })
+        throw new BackupCorruptedMissingBlobError('missing blob', {
+          path,
+          hash,
+        })
       }
       throw err
     }
     const backupHash = await blobHash.fromStream(blob.getByteLength(), stream)
     if (backupHash !== hash) {
-      throw new BackupCorruptedError('hash mismatch for backed up blob', {
-        path,
-        hash,
-        backupHash,
-      })
+      throw new BackupCorruptedInvalidBlobError(
+        'hash mismatch for backed up blob',
+        {
+          path,
+          hash,
+          backupHash,
+        }
+      )
     }
   }
 }
@@ -173,7 +179,7 @@ export async function verifyProject(historyId, endTimestamp) {
         )
       } catch (err) {
         if (err instanceof Chunk.NotPersistedError) {
-          throw new BackupRPOViolationError(
+          throw new BackupRPOViolationChunkNotBackedUpError(
             'BackupRPOviolation: chunk not backed up',
             chunk
           )
@@ -236,3 +242,6 @@ export async function healthCheck() {
     await verifyBlob(historyId, hash)
   }
 }
+export class BackupCorruptedMissingBlobError extends BackupCorruptedError {}
+export class BackupCorruptedInvalidBlobError extends BackupCorruptedError {}
+export class BackupRPOViolationChunkNotBackedUpError extends OError {}
diff --git a/services/history-v1/test/acceptance/js/api/backupVerifier.test.mjs b/services/history-v1/test/acceptance/js/api/backupVerifier.test.mjs
index 8b6836fab5..fe3a4d1591 100644
--- a/services/history-v1/test/acceptance/js/api/backupVerifier.test.mjs
+++ b/services/history-v1/test/acceptance/js/api/backupVerifier.test.mjs
@@ -247,9 +247,7 @@ describe('backupVerifier', function () {
       })
       it('should emit an error message referring to a missing chunk', async function () {
         const stderr = response.stderr
-        expect(stderr).to.include('NotFoundError: no such file')
-        expect(stderr).to.include("bucketName: 'overleaf-test-history-chunks'")
-        expect(stderr).to.include("key: '340/000/000000000000000000/000000000'")
+        expect(stderr).to.include('BackupRPOViolationChunkNotBackedUpError')
       })
     })
     describe('when a project blob is not backed up', function () {
@@ -268,7 +266,9 @@ describe('backupVerifier', function () {
       })
 
       it('includes a BackupCorruptedError in stderr', function () {
-        expect(response.stderr).to.include('BackupCorruptedError: missing blob')
+        expect(response.stderr).to.include(
+          'BackupCorruptedMissingBlobError: missing blob'
+        )
       })
     })
   })