diff --git a/internal/api/photo_thumbnail_test.go b/internal/api/photo_thumbnail_test.go
index 5c6688008..142cefe46 100644
--- a/internal/api/photo_thumbnail_test.go
+++ b/internal/api/photo_thumbnail_test.go
@@ -20,6 +20,13 @@ func TestGetThumbnail(t *testing.T) {
 		GetThumbnail(router, ctx)
 		result := PerformRequest(app, "GET", "/api/v1/thumbnails/1/tile_500")
 
+		assert.Equal(t, http.StatusNotFound, result.Code)
+	})
+	t.Run("could not find original", func(t *testing.T) {
+		app, router, ctx := NewApiTest()
+		GetThumbnail(router, ctx)
+		result := PerformRequest(app, "GET", "/api/v1/thumbnails/123xxx/tile_500")
+
 		assert.Equal(t, http.StatusNotFound, result.Code)
 	})
 }