diff --git a/cwesnoth.cmd b/cwesnoth.cmd
index f1eb33a3a18..a52a067eacc 100644
--- a/cwesnoth.cmd
+++ b/cwesnoth.cmd
@@ -7,6 +7,7 @@ rem   cwesnoth <command line>
 rem
 
 set SDL_STDIO_REDIRECT=0
+set OMP_WAIT_POLICY=PASSIVE
 @wesnoth --wconsole %*
 
 rem Drop this from environment for future runs on the same session.