diff --git a/src/frontend/apps/e2e/__tests__/app-impress/doc-member-create.spec.ts b/src/frontend/apps/e2e/__tests__/app-impress/doc-member-create.spec.ts
index d426ac50..623b8043 100644
--- a/src/frontend/apps/e2e/__tests__/app-impress/doc-member-create.spec.ts
+++ b/src/frontend/apps/e2e/__tests__/app-impress/doc-member-create.spec.ts
@@ -169,8 +169,15 @@ test.describe('Document create member', () => {
 
     const inputSearch = page.getByTestId('quick-search-input');
 
-    const email = randomName('test@test.fr', browserName, 1)[0];
+    let email = 'user.test21@example.COM';
     await inputSearch.fill(email);
+
+    // Check email is found in search (case insensitive)
+    await expect(page.getByRole('option').getByText(email)).toHaveCount(1);
+
+    email = email + 'M';
+    await inputSearch.fill(email);
+
     await page.getByTestId(`search-user-row-${email}`).click();
 
     // Choose a role
@@ -191,7 +198,7 @@ test.describe('Document create member', () => {
 
     const listInvitation = page.getByTestId('doc-share-quick-search');
     const userInvitation = listInvitation.getByTestId(
-      `doc-share-invitation-row-${email}`,
+      `doc-share-invitation-row-${email.toLowerCase()}`,
     );
     await expect(userInvitation).toBeVisible();
 
diff --git a/src/frontend/apps/impress/src/features/docs/doc-share/components/DocShareAddMemberList.tsx b/src/frontend/apps/impress/src/features/docs/doc-share/components/DocShareAddMemberList.tsx
index 351dca4a..b797eb96 100644
--- a/src/frontend/apps/impress/src/features/docs/doc-share/components/DocShareAddMemberList.tsx
+++ b/src/frontend/apps/impress/src/features/docs/doc-share/components/DocShareAddMemberList.tsx
@@ -91,7 +91,7 @@ export const DocShareAddMemberList = ({
       return isInvitationMode
         ? createInvitation({
             ...payload,
-            email: user.email,
+            email: user.email.toLowerCase(),
           })
         : createDocAccess({
             ...payload,
diff --git a/src/frontend/apps/impress/src/features/docs/doc-share/components/DocShareModal.tsx b/src/frontend/apps/impress/src/features/docs/doc-share/components/DocShareModal.tsx
index c214b1ed..54d99c93 100644
--- a/src/frontend/apps/impress/src/features/docs/doc-share/components/DocShareModal.tsx
+++ b/src/frontend/apps/impress/src/features/docs/doc-share/components/DocShareModal.tsx
@@ -296,7 +296,9 @@ const QuickSearchInviteInputSection = ({
       language: '',
     };
 
-    const hasEmailInUsers = users.some((user) => user.email === userQuery);
+    const hasEmailInUsers = users.some(
+      (user) => user.email.toLowerCase() === userQuery.toLowerCase(),
+    );
 
     return {
       groupName: t('Search user result'),
diff --git a/src/frontend/apps/impress/src/features/docs/doc-share/components/SearchUserRow.tsx b/src/frontend/apps/impress/src/features/docs/doc-share/components/SearchUserRow.tsx
index 109a6076..52962610 100644
--- a/src/frontend/apps/impress/src/features/docs/doc-share/components/SearchUserRow.tsx
+++ b/src/frontend/apps/impress/src/features/docs/doc-share/components/SearchUserRow.tsx
@@ -21,7 +21,7 @@ export const SearchUserRow = ({
   alwaysShowRight = false,
   isInvitation = false,
 }: Props) => {
-  const hasFullName = user.full_name != null && user.full_name !== '';
+  const hasFullName = !!user.full_name;
   const { spacingsTokens, colorsTokens } = useCunninghamTheme();
 
   return (