diff --git a/openpype/tools/ayon_utils/widgets/utils.py b/openpype/tools/ayon_utils/widgets/utils.py
index 2817b5efc0..5165b3a262 100644
--- a/openpype/tools/ayon_utils/widgets/utils.py
+++ b/openpype/tools/ayon_utils/widgets/utils.py
@@ -15,6 +15,7 @@ class RefreshThread(QtCore.QThread):
         self._callback = partial(func, *args, **kwargs)
         self._exception = None
         self._result = None
+        self.finished.connect(self._on_finish_callback)
 
     @property
     def id(self):
@@ -29,11 +30,19 @@ class RefreshThread(QtCore.QThread):
             self._result = self._callback()
         except Exception as exc:
             self._exception = exc
-        self.refresh_finished.emit(self.id)
 
     def get_result(self):
         return self._result
 
+    def _on_finish_callback(self):
+        """Trigger custom signal with thread id.
+
+        Listening for 'finished' signal we make sure that execution of thread
+            finished and QThread object can be safely deleted.
+        """
+
+        self.refresh_finished.emit(self.id)
+
 
 class _IconsCache:
     """Cache for icons."""