diff --git a/src/Dev/Deprecation.php b/src/Dev/Deprecation.php
index e8d1111a431..05050c4f193 100644
--- a/src/Dev/Deprecation.php
+++ b/src/Dev/Deprecation.php
@@ -391,7 +391,7 @@ public static function notice($atVersion, $string = '', $scope = Deprecation::SC
                 }
 
                 // Getting a backtrace is slow, so we only do it if we need it
-                $backtrace = null;
+                $backtrace = [];
 
                 // Get the calling scope
                 if ($scope == Deprecation::SCOPE_METHOD) {
diff --git a/tests/php/Dev/DeprecationTest.php b/tests/php/Dev/DeprecationTest.php
index 03f0154fd48..811e2ca70b6 100644
--- a/tests/php/Dev/DeprecationTest.php
+++ b/tests/php/Dev/DeprecationTest.php
@@ -111,8 +111,8 @@ public function testNoticeNoReplacement()
             'Will be removed without equivalent functionality to replace it.',
             'Called from SilverStripe\Dev\Tests\DeprecationTest->testNoticeNoReplacement.'
         ]);
-        $this->expectDeprecation();
-        $this->expectDeprecationMessage($message);
+        $this->expectException(DeprecationTestException::class);
+        $this->expectExceptionMessage($message);
         $this->enableDeprecationNotices(true);
         $ret = $this->myDeprecatedMethodNoReplacement();
         $this->assertSame('abc', $ret);
diff --git a/tests/php/ORM/Search/SearchContextTest.php b/tests/php/ORM/Search/SearchContextTest.php
index ec475c3c299..a3c245d0cc4 100644
--- a/tests/php/ORM/Search/SearchContextTest.php
+++ b/tests/php/ORM/Search/SearchContextTest.php
@@ -138,16 +138,36 @@ public function testUserDefinedFiltersAppearInSearchContext()
     public function testUserDefinedFieldsAppearInSearchContext()
     {
         $company = SearchContextTest\Company::singleton();
+        $searchName = $company->getGeneralSearchFieldName();
+        $expected = new FieldList(
+            new HiddenField($searchName, 'General Search'),
+            (new TextField("Name", 'Name'))
+                ->setMaxLength(255),
+            new TextareaField("Industry", 'Industry'),
+            new NumericField("AnnualProfit", 'The Almighty Annual Profit')
+        );
         $context = $company->getDefaultSearchContext();
+        $actual = $context->getFields();
+        $this->assertSame($expected->count(), $actual->count());
+        $this->assertEquals(
+            $expected->fieldByName($searchName)->Title,
+            $actual->fieldByName($searchName)->Title
+        );
+        $this->assertEquals(
+            $expected->fieldByName('Name')->Title,
+            $actual->fieldByName('Name')->Title
+        );
+        $this->assertEquals(
+            $expected->fieldByName('Name')->getMaxLength(),
+            $actual->fieldByName('Name')->getMaxLength()
+        );
+        $this->assertEquals(
+            $expected->fieldByName('Industry')->Title,
+            $actual->fieldByName('Industry')->Title
+        );
         $this->assertEquals(
-            new FieldList(
-                new HiddenField($company->getGeneralSearchFieldName(), 'General Search'),
-                (new TextField("Name", 'Name'))
-                    ->setMaxLength(255),
-                new TextareaField("Industry", 'Industry'),
-                new NumericField("AnnualProfit", 'The Almighty Annual Profit')
-            ),
-            $context->getFields()
+            $expected->fieldByName('AnnualProfit')->Title,
+            $actual->fieldByName('AnnualProfit')->Title
         );
     }