diff --git a/src/apptask.js b/src/apptask.js
index d1518bd8a..298f24101 100644
--- a/src/apptask.js
+++ b/src/apptask.js
@@ -64,11 +64,10 @@ function debugApp(app) {
 }
 
 function makeTaskError(error, app) {
-    let boxError = error instanceof BoxError ? error : new BoxError(BoxError.UNKNOWN_ERROR, error.message); // until we port everything to BoxError
     // track a few variables which helps 'repair' restart the task (see also scheduleTask in apps.js)
-    boxError.details.taskId = app.taskId;
-    boxError.details.installationState = app.installationState;
-    return boxError.toPlainObject();
+    error.details.taskId = app.taskId;
+    error.details.installationState = app.installationState;
+    return error.toPlainObject();
 }
 
 // updates the app object and the database
diff --git a/src/boxerror.js b/src/boxerror.js
index badec91d2..1394aac12 100644
--- a/src/boxerror.js
+++ b/src/boxerror.js
@@ -60,7 +60,6 @@ BoxError.OPENSSL_ERROR = 'OpenSSL Error';
 BoxError.PLAN_LIMIT = 'Plan Limit';
 BoxError.TASK_ERROR = 'Task Error';
 BoxError.TRY_AGAIN = 'Try Again';
-BoxError.UNKNOWN_ERROR = 'Unknown Error'; // only used for porting
 
 BoxError.prototype.toPlainObject = function () {
     return _.extend({}, { message: this.message, reason: this.reason }, this.details);