diff --git a/config.nims b/config.nims
index ee77289..b7e52d0 100644
--- a/config.nims
+++ b/config.nims
@@ -1,5 +1,6 @@
 --define:ssl
 --define:useStdLib
+--threads:off
 
 # workaround httpbeast file upload bug
 --assertions:off