diff --git a/contrib/sign.sh b/contrib/sign.sh
index 0923b2dc..4ce3193f 100755
--- a/contrib/sign.sh
+++ b/contrib/sign.sh
@@ -35,7 +35,7 @@ awk 'BEGIN    { sep=0 }
                 else       print > "'"$lower"'"}' \
     "$manifest"
 
-ecdsasign "$upper" < "$SECRET" >> "$lower"
+ecdsautil sign „$upper“ < „$SECRET“ >> „$lower“
 
 (
 	cat  "$upper"