diff --git a/src/Mentions.tsx b/src/Mentions.tsx
index b774bad..668b535 100644
--- a/src/Mentions.tsx
+++ b/src/Mentions.tsx
@@ -391,10 +391,13 @@ const InternalMentions = forwardRef<MentionsRef, MentionsProps>(
         const matchOption = !!getOptions(nextMeasureText).length;
 
         if (validateMeasure) {
+          // adding AltGraph also fort azert keyboard
           if (
             key === nextMeasurePrefix ||
             key === 'Shift' ||
             which === KeyCode.ALT ||
+            key === 'AltGraph' ||
+
             mergedMeasuring ||
             (nextMeasureText !== mergedMeasureText && matchOption)
           ) {
diff --git a/tests/FullProcess.spec.tsx b/tests/FullProcess.spec.tsx
index 6b20d37..b202fb9 100644
--- a/tests/FullProcess.spec.tsx
+++ b/tests/FullProcess.spec.tsx
@@ -88,6 +88,26 @@ describe('Full Process', () => {
     expect(onChange).toBeCalledWith('1 @bamboo 2');
   });
 
+  it('azerty Keyboards ', () => {
+    const onChange = jest.fn();
+    const { container } = createMentions({ onChange });
+    simulateInput(container, '@');
+
+    // keyCode for ALTGR
+    fireEvent.keyUp(container.querySelector('textarea'), {
+      keyCode: 'AltGraph',
+      which: 225,
+    });
+    expectMeasuring(container);
+
+    fireEvent.keyDown(container.querySelector('textarea'), {
+      keyCode: KeyCode.ENTER,
+      which: KeyCode.ENTER,
+    });
+
+    expect(onChange).toBeCalledWith('@bamboo ');
+  });
+
   it('reuse typed text', () => {
     const onChange = jest.fn();
     const { container } = createMentions({ onChange });