diff --git a/libervia/cli/base.py b/libervia/cli/base.py
index 823ef52c..c6a27895 100644
--- a/libervia/cli/base.py
+++ b/libervia/cli/base.py
@@ -326,9 +326,9 @@ class LiberviaCli:
         """
         if self.verbosity >= verbosity:
             if error:
-                print(msg, end=end, file=sys.stderr)
+                print(msg, end=end, file=sys.stderr, flush=True)
             else:
-                print(msg, end=end)
+                print(msg, end=end, flush=True)
 
     async def output(self, type_, name, extra_outputs, data):
         if name in extra_outputs: