diff --git a/src/Model/ElifeAssessment.php b/src/Model/ElifeAssessment.php
index 4f6d4bbc..98e7eb95 100644
--- a/src/Model/ElifeAssessment.php
+++ b/src/Model/ElifeAssessment.php
@@ -14,7 +14,7 @@ final class ElifeAssessment implements Model
      */
     public function __construct(
         string $title,
-        ArticleSection $articleSection = null,
+        ArticleSection $articleSection,
         array $significance = null,
         array $strength = null
     ) {
@@ -29,10 +29,7 @@ public function getTitle(): string
         return $this->title;
     }
 
-    /**
-     * @return ArticleSection|null
-     */
-    public function getArticleSection()
+    public function getArticleSection(): ArticleSection
     {
         return $this->articleSection;
     }
diff --git a/test/Builder.php b/test/Builder.php
index 4a109a9f..c3294e14 100644
--- a/test/Builder.php
+++ b/test/Builder.php
@@ -279,7 +279,7 @@ private function defaultTestData()
                 ElifeAssessment::class => function () {
                     return [
                         'title' => 'eLife Assessment',
-                        'articleSection' => null,
+                        'articleSection' => new ArticleSection(new ArraySequence([new Paragraph('Article 09560 elife assessment text')]), '10.7554/eLife.09560elifeAssessment', 'elife-assessment-id'),
                         'significance' => ['Landmark', 'Important'],
                         'strength' => ['Solid', 'Adequate'],
                     ];
diff --git a/test/Model/ArticleVoRTest.php b/test/Model/ArticleVoRTest.php
index 07b79183..68a49ac4 100644
--- a/test/Model/ArticleVoRTest.php
+++ b/test/Model/ArticleVoRTest.php
@@ -312,7 +312,7 @@ public function it_may_be_vor_prc()
     public function it_may_have_an_elife_assessment()
     {
         $with = $this->builder
-            ->withElifeAssessment($elifeAssessment = new ElifeAssessment('elife assessment', null, ['solid'], null))
+            ->withElifeAssessment($elifeAssessment = Builder::dummy(ElifeAssessment::class))
             ->__invoke();
         $withOut = $this->builder
             ->withElifeAssessment(null)
diff --git a/test/Model/ElifeAssessmentTest.php b/test/Model/ElifeAssessmentTest.php
index 7e282971..906c96a1 100644
--- a/test/Model/ElifeAssessmentTest.php
+++ b/test/Model/ElifeAssessmentTest.php
@@ -26,7 +26,7 @@ public function set_up()
      */
     public function it_has_a_title()
     {
-        $assessment = new ElifeAssessment($this->title, null, null, null);
+        $assessment = new ElifeAssessment($this->title, $this->articleSection, null, null);
 
         $this->assertSame($this->title, $assessment->getTitle());
     }
@@ -46,8 +46,8 @@ public function it_has_an_article_section()
      */
     public function it_may_have_significance_terms()
     {
-        $with = new ElifeAssessment($this->title, null, ['important'], ['solid']);
-        $withOut = new ElifeAssessment($this->title, null, null, ['solid']);
+        $with = new ElifeAssessment($this->title, $this->articleSection, ['important'], ['solid']);
+        $withOut = new ElifeAssessment($this->title, $this->articleSection, null, ['solid']);
 
         $this->assertSame(['important'], $with->getSignificance());
         $this->assertNull($withOut->getSignificance());
@@ -58,8 +58,8 @@ public function it_may_have_significance_terms()
      */
     public function it_may_have_strength_terms()
     {
-        $with = new ElifeAssessment($this->title, null, ['important'], ['solid']);
-        $withOut = new ElifeAssessment($this->title, null, ['important'], null);
+        $with = new ElifeAssessment($this->title, $this->articleSection, ['important'], ['solid']);
+        $withOut = new ElifeAssessment($this->title, $this->articleSection, ['important'], null);
 
         $this->assertSame(['solid'], $with->getStrength());
         $this->assertNull($withOut->getStrength());