diff --git a/js/src/scrollspy.js b/js/src/scrollspy.js
index 0b1747c8ae..69de7151be 100644
--- a/js/src/scrollspy.js
+++ b/js/src/scrollspy.js
@@ -208,11 +208,11 @@ class ScrollSpy extends BaseComponent {
         continue
       }
 
-      const observableSection = SelectorEngine.findOne(anchor.hash, this._element)
+      const observableSection = SelectorEngine.findOne(decodeURI(anchor.hash), this._element)
 
       // ensure that the observableSection exists & is visible
       if (isVisible(observableSection)) {
-        this._targetLinks.set(anchor.hash, anchor)
+        this._targetLinks.set(decodeURI(anchor.hash), anchor)
         this._observableSections.set(anchor.hash, observableSection)
       }
     }
diff --git a/js/tests/unit/scrollspy.spec.js b/js/tests/unit/scrollspy.spec.js
index 070448c17e..ecbd9522c0 100644
--- a/js/tests/unit/scrollspy.spec.js
+++ b/js/tests/unit/scrollspy.spec.js
@@ -940,5 +940,39 @@ describe('ScrollSpy', () => {
       }, 100)
       link.click()
     })
+
+    it('should smoothscroll to observable with anchor link that contains a french word as id', done => {
+      fixtureEl.innerHTML = [
+        '<nav id="navBar" class="navbar">',
+        '  <ul class="nav">',
+        '    <li class="nav-item"><a id="li-jsm-1" class="nav-link" href="#présentation">div 1</a></li>',
+        '  </ul>',
+        '</nav>',
+        '<div class="content" data-bs-target="#navBar" style="overflow-y: auto">',
+        '  <div id="présentation">div 1</div>',
+        '</div>'
+      ].join('')
+
+      const div = fixtureEl.querySelector('.content')
+      const link = fixtureEl.querySelector('[href="#présentation"]')
+      const observable = fixtureEl.querySelector('#présentation')
+      const clickSpy = getElementScrollSpy(div)
+      // eslint-disable-next-line no-new
+      new ScrollSpy(div, {
+        offset: 1,
+        smoothScroll: true
+      })
+
+      setTimeout(() => {
+        if (div.scrollTo) {
+          expect(clickSpy).toHaveBeenCalledWith({ top: observable.offsetTop - div.offsetTop, behavior: 'smooth' })
+        } else {
+          expect(clickSpy).toHaveBeenCalledWith(observable.offsetTop - div.offsetTop)
+        }
+
+        done()
+      }, 100)
+      link.click()
+    })
   })
 })
diff --git a/js/tests/visual/scrollspy.html b/js/tests/visual/scrollspy.html
index 2daa7abd69..541028478d 100644
--- a/js/tests/visual/scrollspy.html
+++ b/js/tests/visual/scrollspy.html
@@ -29,6 +29,7 @@
               <li><a class="dropdown-item" href="#one">One</a></li>
               <li><a class="dropdown-item" href="#two">Two</a></li>
               <li><a class="dropdown-item" href="#three">Three</a></li>
+              <li><a class="dropdown-item" href="#présentation">Présentation</a></li>
             </ul>
           </li>
           <li class="nav-item">
@@ -82,6 +83,14 @@
       <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
       <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
       <hr>
+      <h2 id="présentation">Présentation</h2>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <p>Ad leggings keytar, brunch id art party dolor labore. Pitchfork yr enim lo-fi before they sold out qui. Tumblr farm-to-table bicycle rights whatever. Anim keffiyeh carles cardigan. Velit seitan mcsweeney's photo booth 3 wolf moon irure. Cosby sweater lomo jean shorts, williamsburg hoodie minim qui you probably haven't heard of them et cardigan trust fund culpa biodiesel wes anderson aesthetic. Nihil tattooed accusamus, cred irony biodiesel keffiyeh artisan ullamco consequat.</p>
+      <hr>
       <h2 id="final">Final section</h2>
       <p>Ad leggings keytar, brunch id art party dolor labore.</p>
     </div>