diff --git a/tempest/hacking/checks.py b/tempest/hacking/checks.py
index 8cfd548..aa97211 100644
--- a/tempest/hacking/checks.py
+++ b/tempest/hacking/checks.py
@@ -22,6 +22,8 @@
 SKIP_DECORATOR_RE = re.compile(r'\s*@testtools.skip\((.*)\)')
 SKIP_STR_RE = re.compile(r'.*Bug #\d+.*')
 PYTHON_CLIENT_RE = re.compile('import (%s)client' % '|'.join(PYTHON_CLIENTS))
+TEST_DEFINITION = re.compile(r'^\s*def test.*')
+SCENARIO_DECORATOR = re.compile(r'\s*@.*services\(')
 
 
 def skip_bugs(physical_line):
@@ -53,6 +55,21 @@
                      " in tempest/api/* tests"))
 
 
+def scenario_tests_need_service_tags(physical_line, filename,
+                                     previous_logical):
+    """Check that scenario tests have service tags
+
+    T104: Scenario tests require a services decorator
+    """
+
+    if 'tempest/scenario' in filename:
+        if TEST_DEFINITION.match(physical_line):
+            if not SCENARIO_DECORATOR.match(previous_logical):
+                return (physical_line.find('def'),
+                        "T104: Scenario tests require a service decorator")
+
+
 def factory(register):
     register(skip_bugs)
     register(import_no_clients_in_api)
+    register(scenario_tests_need_service_tags)