diff --git a/src/sage/features/__init__.py b/src/sage/features/__init__.py
index 6af9413e55a..a8b11ef7db5 100644
--- a/src/sage/features/__init__.py
+++ b/src/sage/features/__init__.py
@@ -162,7 +162,7 @@ def __init__(self, name, spkg=None, url=None, description=None, type='optional')
         # shared among subprocesses. Thus we use the Value class from the
         # multiprocessing module (cf. self._seen of class AvailableSoftware)
         from multiprocessing import Value
-        self._num_hidings = Value('i', 0)
+        self._num_hidings = Value('i', 0, lock=False)
 
         try:
             from sage.misc.package import spkg_type