diff --git a/selftest/schema_test/schema_case_06.conf b/selftest/schema_test/schema_case_06.conf
new file mode 100644
index 0000000..ea7f45f
--- /dev/null
+++ b/selftest/schema_test/schema_case_06.conf
@@ -0,0 +1,29 @@
+schema:
+  handover:
+    threshold: 'uint'
+    myvar: 'test_type'
+    anothervar: 'another_type'
+
+tests:
+   - foobar:
+       prefix:
+         handover:
+           myvar: 'valid_value1'
+           anothervar: 'unique_val_ok'
+           threshold: 2
+   - foobar:
+       prefix:
+         handover:
+           myvar: 'valid_value2'
+   - foobar:
+       prefix:
+         handover:
+           threshold: 0
+   - foobar:
+       prefix:
+         handover:
+             myvar: 'invalid_val'
+   - foobar:
+       prefix:
+         handover:
+             anothervar: 'another_invalid_val'
diff --git a/selftest/schema_test/schema_test.ok b/selftest/schema_test/schema_test.ok
index 2c4cd6a..846caae 100644
--- a/selftest/schema_test/schema_test.ok
+++ b/selftest/schema_test/schema_test.ok
@@ -61,3 +61,20 @@
 --- -: ERR: ValueError: config item is a list, should be 'str': 'foobar.prefix.hey.ho.letsgo[]'
 Validation: Error
 ----------------------
+schema_case_06.conf:
+{'foobar.prefix.handover.anothervar': 'another_type',
+ 'foobar.prefix.handover.myvar': 'test_type',
+ 'foobar.prefix.handover.threshold': 'uint'}
+validating tests[0]
+Validation: OK
+validating tests[1]
+Validation: OK
+validating tests[2]
+Validation: OK
+validating tests[3]
+--- foobar.prefix.handover.myvar: ERR: ValueError: Invalid value 'invalid_val' for schema type 'test_type' (validator: test_validator)
+Validation: Error
+validating tests[4]
+--- foobar.prefix.handover.anothervar: ERR: ValueError: Invalid value 'another_invalid_val' for schema type 'another_type' (validator: <lambda>)
+Validation: Error
+----------------------
diff --git a/selftest/schema_test/schema_test.py b/selftest/schema_test/schema_test.py
index 3cf2799..bffa601 100755
--- a/selftest/schema_test/schema_test.py
+++ b/selftest/schema_test/schema_test.py
@@ -25,6 +25,13 @@
             li.append(f)
     return sorted(li)
 
+def test_validator(val):
+    return val in ('valid_value1', 'valid_value2')
+
+schema.register_schema_types({'test_type': test_validator,
+                              'another_type': lambda val: val == 'unique_val_ok'})
+
+
 print('==== Testing dynamically generated schemas ====')
 for f in get_case_list(_prep.script_dir):
     print('%s:' % f)