diff --git a/moulinette/utils/process.py b/moulinette/utils/process.py
index e3a760d9..b8d5b915 100644
--- a/moulinette/utils/process.py
+++ b/moulinette/utils/process.py
@@ -77,7 +77,7 @@ def call_async_output(args, callback, **kwargs):
 
             while True:
                 try:
-                    callback, message = log_queue.get_nowait()
+                    callback, message = log_queue.get(True, 1)
                 except queue.Empty:
                     break