diff --git a/MANIFEST b/MANIFEST
index d30f59207..ec7fb5370 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -125,6 +125,7 @@ lib/util/regress/sudo_conf/test2.in
 lib/util/regress/sudo_conf/test2.out.ok
 lib/util/regress/sudo_conf/test3.in
 lib/util/regress/sudo_conf/test3.out.ok
+lib/util/regress/sudo_conf/test4.err.ok
 lib/util/regress/sudo_conf/test4.in
 lib/util/regress/sudo_conf/test4.out.ok
 lib/util/regress/sudo_conf/test5.err.ok
diff --git a/lib/util/regress/sudo_conf/test4.err.ok b/lib/util/regress/sudo_conf/test4.err.ok
new file mode 100644
index 000000000..cf8f39f62
--- /dev/null
+++ b/lib/util/regress/sudo_conf/test4.err.ok
@@ -0,0 +1 @@
+conf_test: invalid value for disable_coredump `foo' in regress/sudo_conf/test4.in, line 1