diff --git a/plugins/sudoers/Makefile.in b/plugins/sudoers/Makefile.in
index 70acbf194..c5e016f5f 100644
--- a/plugins/sudoers/Makefile.in
+++ b/plugins/sudoers/Makefile.in
@@ -353,10 +353,11 @@ uninstall:
 	    rm -f $(DESTDIR)$(sudoersdir)/sudoers
 
 check: check_iolog_path
-	./check_iolog_path $(srcdir)/regress/iolog_path/data
+	@./check_iolog_path $(srcdir)/regress/iolog_path/data
+	@for t in $(srcdir)/regress/testsudoers/test*.sh; do SRCDIR=$(srcdir) $(SHELL) $$t; done
 
 clean:
-	-$(LIBTOOL) --mode=clean rm -f $(PROGS) *.lo *.o *.la *.a stamp-* core *.core core.*
+	-$(LIBTOOL) --mode=clean rm -f $(PROGS) *.lo *.o *.la *.a stamp-* core *.core core.* test*.out
 
 mostlyclean: clean
 
diff --git a/plugins/sudoers/regress/testsudoers/test1.ok b/plugins/sudoers/regress/testsudoers/test1.ok
new file mode 100644
index 000000000..f980873c3
--- /dev/null
+++ b/plugins/sudoers/regress/testsudoers/test1.ok
@@ -0,0 +1,8 @@
+Parses OK.
+
+Entries for user root:
+
+ALL = ALL
+	host  matched
+
+Command unmatched
diff --git a/plugins/sudoers/regress/testsudoers/test1.sh b/plugins/sudoers/regress/testsudoers/test1.sh
new file mode 100755
index 000000000..974a40548
--- /dev/null
+++ b/plugins/sudoers/regress/testsudoers/test1.sh
@@ -0,0 +1,20 @@
+#!/bin/sh
+#
+# Test for NULL dereference with "sudo -g group" when the sudoers rule
+# has no runas user or group listed.
+# This is RedHat bug Bug 667103.
+#
+
+WANT=${SRCDIR-.}/regress/testsudoers/test1.ok
+GOT=test1.out
+./testsudoers -g wheel root id > $GOT <<EOF
+root ALL = ALL
+EOF
+
+# Check results
+if cmp $WANT $GOT >/dev/null; then
+    echo "testsudoers 1: OK"
+else
+    echo "testsudoers 1: FAILED"
+    diff $WANT $GOT
+fi