diff --git a/src/modules/shellfilter-999999.0a1.0.tm b/src/modules/shellfilter-999999.0a1.0.tm
index 65926617..e64e77ca 100644
--- a/src/modules/shellfilter-999999.0a1.0.tm
+++ b/src/modules/shellfilter-999999.0a1.0.tm
@@ -2642,7 +2642,8 @@ namespace eval shellfilter {
             ::shellfilter::log::write $debugname " waitvar '$waitvar'"
         }
         lassign [chan pipe] rderr wrerr
-        chan configure $wrerr -blocking 0
+        #JMN 2025
+        #chan configure $wrerr -blocking 0
 
         set custom_stderr ""
         set lastitem [lindex $commandlist end]