diff --git a/tests/fixtures/layout-build-parameters.yaml b/tests/fixtures/layout-build-parameters.yaml
deleted file mode 100644
index 23feb4a71e..0000000000
--- a/tests/fixtures/layout-build-parameters.yaml
+++ /dev/null
@@ -1,33 +0,0 @@
-pipelines:
-  - name: gate
-    manager: DependentPipelineManager
-    trigger:
-      gerrit:
-        - event: comment-added
-          approval:
-            - approved: 1
-    success:
-      gerrit:
-        verified: 2
-        submit: true
-    failure:
-      gerrit:
-        verified: -2
-    start:
-      gerrit:
-        verified: 0
-    precedence: high
-
-jobs:
-  - name: log-path
-    success-pattern: foo{build.parameters[LOG_PATH]}bar
-  - name: nonexistent
-    success-pattern: foo{build.parameters[NONEXISTENT]}bar
-
-projects:
-  - name: org/project1
-    gate:
-        - log-path
-  - name: org/project2
-    gate:
-        - nonexistent
diff --git a/tests/test_scheduler.py b/tests/test_scheduler.py
index 52c6c81aa5..dbcfd1b75b 100755
--- a/tests/test_scheduler.py
+++ b/tests/test_scheduler.py
@@ -2683,44 +2683,6 @@ For CI problems and help debugging, contact ci@example.org"""
         self.assertEqual('The merge failed! For more information...',
                          self.smtp_messages[0]['body'])
 
-    def test_build_parameter_in_report(self):
-        """Check that a message is sent to a reporter when embedding a build
-        parameter"""
-        self.config.set('zuul', 'layout_config',
-                        'tests/fixtures/layout-build-parameters.yaml')
-        self.sched.reconfigure(self.config)
-        self.registerJobs()
-
-        # Check the reported message is valid
-        A = self.fake_gerrit.addFakeChange('org/project1', 'master', 'A')
-        A.addApproval('CRVW', 2)
-        self.fake_gerrit.addEvent(A.addApproval('APRV', 1))
-        self.waitUntilSettled()
-
-        self.assertEqual(1, len(self.history))  # 1 job
-        self.assertEqual(2, len(A.messages))  # 2 messages
-
-        self.assertIn('gate/log-path', A.messages[1])
-
-    def test_nonexistent_build_parameter_in_report(self):
-        """Check that a message is sent to a reporter even when embedding a
-        nonexistent build parameter"""
-        self.config.set('zuul', 'layout_config',
-                        'tests/fixtures/layout-build-parameters.yaml')
-        self.sched.reconfigure(self.config)
-        self.registerJobs()
-
-        # Check the reported message is valid
-        A = self.fake_gerrit.addFakeChange('org/project2', 'master', 'A')
-        A.addApproval('CRVW', 2)
-        self.fake_gerrit.addEvent(A.addApproval('APRV', 1))
-        self.waitUntilSettled()
-
-        self.assertEqual(1, len(self.history))  # 1 job
-        self.assertEqual(2, len(A.messages))  # 2 messages
-
-        self.assertIn('NONEXISTENT', A.messages[1])
-
     def test_swift_instructions(self):
         "Test that the correct swift instructions are sent to the workers"
         self.config.set('zuul', 'layout_config',
diff --git a/zuul/scheduler.py b/zuul/scheduler.py
index 0b228d9f78..c2fc37897e 100644
--- a/zuul/scheduler.py
+++ b/zuul/scheduler.py
@@ -1492,15 +1492,10 @@ class BasePipelineManager(object):
                 if job.failure_pattern:
                     pattern = job.failure_pattern
             if pattern:
-                try:
-                    url = pattern.format(change=item.change,
-                                         pipeline=self.pipeline,
-                                         job=job,
-                                         build=build)
-                except KeyError:
-                    self.log.exception("Unknown key while formatting url %s" %
-                                       pattern)
-                    url = pattern
+                url = pattern.format(change=item.change,
+                                     pipeline=self.pipeline,
+                                     job=job,
+                                     build=build)
             else:
                 url = build.url or job.name
             if not job.voting: