diff --git a/bin/blackbox_shred_all_files b/bin/blackbox_shred_all_files
index 87ac1f6..7b640bc 100755
--- a/bin/blackbox_shred_all_files
+++ b/bin/blackbox_shred_all_files
@@ -45,6 +45,6 @@ if bash --help | grep import-functions >/dev/null 2>/dev/null; then
 fi
 
 export IFS=
-tr '\n' '\0' <"$BB_FILES" | xargs -0 -I{} -n 1 -P $MAX_PARALLEL_SHRED bash $bash_args -c "exported_internal_shred_file $DEREFERENCED_BIN_DIR \"{}\"" $DEREFERENCED_BIN_DIR/fake
+tr '\n' '\0' <"$BB_FILES" | xargs -0 -I{} -P $MAX_PARALLEL_SHRED bash $bash_args -c "exported_internal_shred_file $DEREFERENCED_BIN_DIR \"{}\"" $DEREFERENCED_BIN_DIR/fake
 
 echo '========== DONE.'