diff --git a/opkg_helpers.sh b/opkg_helpers.sh
index 6651285..24b7780 100755
--- a/opkg_helpers.sh
+++ b/opkg_helpers.sh
@@ -3,7 +3,7 @@
 # set -x
 
 compute_md5 () {
-        execdownload_opkg {fd}< <(md5sum "$1")   # open fd readable for P.S.
+        exec {fd}< <(md5sum "$1")   # open fd readable for P.S.
         cs_pid=$!                   # remember pid of P.S.
         md5="" 
         while read t <&$fd; do