diff --git a/util/build-gnu.sh b/util/build-gnu.sh
index d53052167..8d340682f 100755
--- a/util/build-gnu.sh
+++ b/util/build-gnu.sh
@@ -3,7 +3,7 @@
 #
 # UU_MAKE_PROFILE == 'debug' | 'release' ## build profile for *uutils* build; may be supplied by caller, defaults to 'debug'
 
-# spell-checker:ignore (paths) abmon deref discrim eacces getlimits getopt ginstall inacc infloop inotify reflink ; (misc) INT_OFLOW OFLOW baddecode submodules ; (vars/env) SRCDIR
+# spell-checker:ignore (paths) abmon deref discrim eacces getlimits getopt ginstall inacc infloop inotify reflink ; (misc) INT_OFLOW OFLOW baddecode submodules ; (vars/env) SRCDIR vdir rcexp
 
 set -e
 
@@ -150,3 +150,9 @@ sed -i "s/  {ERR_SUBST=>\"s\/(unrecognized|unknown) option \[-' \]\*foobar\[' \]
 
 # Remove the check whether a util was built. Otherwise tests against utils like "arch" are not run.
 sed -i "s|require_built_ |# require_built_ |g" init.cfg
+
+# with the option -/ is used, clap is returning a better error than GNU's. Adjust the GNU test
+sed -i -e "s~  grep \" '\*/'\*\" err || framework_failure_~  grep \" '*-/'*\" err || framework_failure_~" tests/misc/usage_vs_getopt.sh
+sed -i -e "s~  sed -n \"1s/'\\\/'/'OPT'/p\" < err >> pat || framework_failure_~  sed -n \"1s/'-\\\/'/'OPT'/p\" < err >> pat || framework_failure_~" tests/misc/usage_vs_getopt.sh
+# Ignore some binaries (not built)
+sed -i -e "s/rcexp=1$/rcexp=1\n  case \"\$prg\" in chcon|dir|runcon|vdir) return;; esac/" tests/misc/usage_vs_getopt.sh