diff --git a/src/Mentions.tsx b/src/Mentions.tsx
index 9da0c0a..22ab019 100644
--- a/src/Mentions.tsx
+++ b/src/Mentions.tsx
@@ -396,6 +396,7 @@ const InternalMentions = forwardRef<MentionsRef, MentionsProps>(
             key === nextMeasurePrefix ||
             key === 'Shift' ||
             key === 'AltGraph' ||
+
             mergedMeasuring ||
             (nextMeasureText !== mergedMeasureText && matchOption)
           ) {
diff --git a/tests/FullProcess.spec.tsx b/tests/FullProcess.spec.tsx
index bf24c2d..ef4b585 100644
--- a/tests/FullProcess.spec.tsx
+++ b/tests/FullProcess.spec.tsx
@@ -206,4 +206,24 @@ describe('Full Process', () => {
 
     expectMeasuring(container, false);
   });
+
+  it('AltGr + à startMeasure', () => {
+    const onChange = jest.fn();
+    const { container } = createMentions({ onChange });
+    simulateInput(container, '@');
+
+    // AZERTY Keyboards (AltGr + à)
+    fireEvent.keyUp(container.querySelector('textarea'), {
+      keyCode: KeyCode.ALT,
+      which: KeyCode.ALT,
+    });
+    expectMeasuring(container);
+
+    fireEvent.keyDown(container.querySelector('textarea'), {
+      keyCode: KeyCode.ENTER,
+      which: KeyCode.ENTER,
+    });
+
+    expect(onChange).toBeCalledWith('@bamboo ');
+  });
 });