diff --git a/LXMF/LXStamper.py b/LXMF/LXStamper.py
index 56e2500..39b541b 100644
--- a/LXMF/LXStamper.py
+++ b/LXMF/LXStamper.py
@@ -15,6 +15,8 @@ PN_VALIDATION_POOL_MIN_SIZE     = 256
 
 active_jobs = {}
 
+if RNS.vendor.platformutils.is_linux(): multiprocessing.set_start_method("fork")
+
 def stamp_workblock(material, expand_rounds=WORKBLOCK_EXPAND_ROUNDS):
     wb_st = time.time()
     workblock = b""