diff --git a/bindings/Sofa/package/__init__.py b/bindings/Sofa/package/__init__.py
index 5b73b863..965ac6f1 100644
--- a/bindings/Sofa/package/__init__.py
+++ b/bindings/Sofa/package/__init__.py
@@ -161,7 +161,10 @@ def _select_bin_with_dll(candidates, dll_names):
             os.environ['PATH'] = sofapython3_bin_path + os.pathsep + os.environ.get('PATH', '')
 
 print("---------------------------------------")
-sys.stdout.flush()
+if sys.stdout is not None:
+    sys.stdout.flush()
+if sys.stderr is not None:
+    sys.stderr.flush() 
 
 import Sofa.constants
 import Sofa.Helper