diff --git a/bootstrap.sh b/bootstrap.sh
index 412550f..0beaf29 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -1,16 +1,18 @@
 #!/bin/sh
 
 AUTOCONF_FILES="Makefile.in aclocal.m4 ar-lib autom4te.cache compile config.* \
-        configure depcomp install-sh ltmain.sh missing *libtool"
+        configure depcomp install-sh ltmain.sh missing *libtool test-driver"
 
 case $1 in
     clean)
         test -f Makefile && make maintainer-clean
-        rm -rf ${AUTOCONF_FILES}
-
+        for file in ${AUTOCONF_FILES}; do
+            find . -name "$file" -print0 | xargs -0 -r rm -rf
+        done
         exit 0
         ;;
 esac
 
 autoreconf -i
+# shellcheck disable=SC2016
 echo 'Run "./configure ${CONFIGURE_FLAGS} && make"'