diff --git a/lib/workers/branch/check-existing.js b/lib/workers/branch/check-existing.js
index 41b15cee1afbf4050ff420930d08e1e614521c76..7d646f4d60a876601218a2a9aa330fdb6680e1e8 100644
--- a/lib/workers/branch/check-existing.js
+++ b/lib/workers/branch/check-existing.js
@@ -22,19 +22,6 @@ async function prAlreadyExisted(config) {
   );
   if (pr) {
     logger.debug('Found closed PR with current title');
-    // this code exists to ignore mistakenly closed PRs which occurred due to a bug
-    // TODO: Remove this by end of June 2018
-    const closedAt = moment(pr.closed_at);
-    const problemStart = moment('2017-10-15T20:00:00Z');
-    const problemStopped = moment('2017-10-16T06:00:00Z');
-    if (problemStart.isBefore(closedAt) && closedAt.isBefore(problemStopped)) {
-      logger.info(
-        { closedAt, problemStart, problemStopped },
-        'Renaming mistakenly closed PR'
-      );
-      await platform.updatePr(pr.number, `${pr.title} - autoclosed`);
-      return null;
-    }
     return pr;
   }
   // Check for legacy PR title format