diff --git a/glances/plugins/glances_cloud.py b/glances/plugins/glances_cloud.py
index ec74c3f5..38864e71 100644
--- a/glances/plugins/glances_cloud.py
+++ b/glances/plugins/glances_cloud.py
@@ -189,4 +189,4 @@ class ThreadOpenStack(threading.Thread):
 
     def stopped(self):
         """Return True is the thread is stopped."""
-        return self._stopper.isSet()
+        return self._stopper.is_set()
diff --git a/glances/plugins/glances_docker.py b/glances/plugins/glances_docker.py
index 328e73b8..5c55ae26 100644
--- a/glances/plugins/glances_docker.py
+++ b/glances/plugins/glances_docker.py
@@ -723,7 +723,7 @@ class ThreadDockerGrabber(threading.Thread):
 
     def stopped(self):
         """Return True is the thread is stopped."""
-        return self._stopper.isSet()
+        return self._stopper.is_set()
 
 
 def sort_stats(stats):
diff --git a/glances/plugins/glances_ports.py b/glances/plugins/glances_ports.py
index 0995c988..1eabe69c 100644
--- a/glances/plugins/glances_ports.py
+++ b/glances/plugins/glances_ports.py
@@ -256,7 +256,7 @@ class ThreadScanner(threading.Thread):
 
     def stopped(self):
         """Return True is the thread is stopped."""
-        return self._stopper.isSet()
+        return self._stopper.is_set()
 
     def _web_scan(self, web):
         """Scan the  Web/URL (dict) and update the status key."""