1 files changed, 3 insertions, 1 deletions
diff --git a/ui.cpp b/ui.cpp
index 51d7f129c..6c91d01b8 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -78,7 +78,9 @@ RecoveryUI::RecoveryUI()
 RecoveryUI::~RecoveryUI() {
   ev_exit();
   input_thread_stopped_ = true;
-  input_thread_.join();
+  if (input_thread_.joinable()) {
+    input_thread_.join();
+  }
 }
 
 void RecoveryUI::OnKeyDetected(int key_code) {