diff --git a/detectors/cds/lib/filterbx.awk b/detectors/cds/lib/filterbx.awk
index 775ad30..ae8a1dc 100644
--- a/detectors/cds/lib/filterbx.awk
+++ b/detectors/cds/lib/filterbx.awk
@@ -4,7 +4,7 @@
 #
 
 BEGIN {
-  if (IDMIN == "")  IDMIN  = 80
+  if (IDMIN == "")  IDMIN  = 50
   if (NBMIN == "")  NBMIN  = 50
   if (NBMAX == "")  NBMAX  = 200
   if (COMIN == "")  COMIN  = 0.8