diff --git a/lemarche/www/auth/forms.py b/lemarche/www/auth/forms.py
index 0e3d9bc03..c357e5cda 100644
--- a/lemarche/www/auth/forms.py
+++ b/lemarche/www/auth/forms.py
@@ -52,7 +52,7 @@ class SignupForm(UserCreationForm):
         queryset=Sector.objects.form_filter_queryset(),
         choices_groupby="group",
         to_field_name="slug",
-        required=True,
+        required=False,
     )
 
     # help_text="Nous enverrons un e-mail de confirmation à cette adresse avant de valider le compte.")
diff --git a/lemarche/www/auth/tests.py b/lemarche/www/auth/tests.py
index a35477483..26c4f50c0 100644
--- a/lemarche/www/auth/tests.py
+++ b/lemarche/www/auth/tests.py
@@ -122,7 +122,7 @@ def _complete_form(self, user_profile: dict, signup_url=reverse("auth:signup"),
         scroll_to_and_click_element(self.driver, accept_rgpd_element)
 
         if with_submit:
-            submit_element = self.driver.find_element(By.CSS_SELECTOR, "form button")
+            submit_element = self.driver.find_element(By.CSS_SELECTOR, "form button[type='submit']")
             scroll_to_and_click_element(self.driver, submit_element)
 
     def _assert_signup_success(self, redirect_url: str) -> list:
@@ -182,10 +182,8 @@ def test_buyer_submits_signup_form_success_extra_data(self):
             By.CSS_SELECTOR, f"input#id_nb_of_inclusive_provider_2022_{nb_of_inclusive}"
         )
         scroll_to_and_click_element(self.driver, nb_of_inclusive_provider_2022_element)
-
-        submit_element = self.driver.find_element(By.CSS_SELECTOR, "form button")
+        submit_element = self.driver.find_element(By.CSS_SELECTOR, "form button[type='submit']")
         scroll_to_and_click_element(self.driver, submit_element)
-
         # should get created User
         user = User.objects.get(email=BUYER.get("email"))
 
@@ -209,7 +207,7 @@ def test_buyer_submits_signup_form_error(self):
     #         By.XPATH, "//select[@id='id_partner_kind']/option[text()='Réseaux IAE']"
     #     )
     #     scroll_to_and_click_element(self.driver, partner_kind_option_element, sleep_time=10)
-    #     submit_element = self.driver.find_element(By.CSS_SELECTOR, "form button")
+    #     submit_element = self.driver.find_element(By.CSS_SELECTOR, "form button[type='submit']")
     #     scroll_to_and_click_element(self.driver, submit_element)
 
     #     self._assert_signup_success(redirect_url=reverse("wagtail_serve", args=("",)))
@@ -230,7 +228,7 @@ def test_user_submits_signup_form_with_next_param_success_and_redirect(self):
             signup_url=f"{reverse('auth:signup')}?next={next_url}",
             with_submit=False,
         )
-        submit_element = self.driver.find_element(By.CSS_SELECTOR, "form button")
+        submit_element = self.driver.find_element(By.CSS_SELECTOR, "form button[type='submit']")
         scroll_to_and_click_element(self.driver, submit_element)
 
         self._assert_signup_success(redirect_url=next_url)
@@ -258,7 +256,7 @@ def test_siae_user_can_sign_in_and_is_redirected_to_dashboard(self):
         driver.find_element(By.CSS_SELECTOR, "input#id_username").send_keys(user_siae.email)
         driver.find_element(By.CSS_SELECTOR, "input#id_password").send_keys(DEFAULT_PASSWORD)
 
-        driver.find_element(By.CSS_SELECTOR, "form button").click()
+        driver.find_element(By.CSS_SELECTOR, "form button[type='submit']").click()
 
         # should redirect SIAE to dashboard
         self.assertEqual(driver.current_url, f"{self.live_server_url}{reverse('dashboard:home')}")
@@ -271,7 +269,7 @@ def test_non_siae_user_can_sign_in_and_is_redirected_to_home(self):
         driver.find_element(By.CSS_SELECTOR, "input#id_username").send_keys(user_buyer.email)
         driver.find_element(By.CSS_SELECTOR, "input#id_password").send_keys(DEFAULT_PASSWORD)
 
-        driver.find_element(By.CSS_SELECTOR, "form button").click()
+        driver.find_element(By.CSS_SELECTOR, "form button[type='submit']").click()
 
         # should redirect BUYER to search
         self.assertEqual(driver.current_url, f"{self.live_server_url}{reverse('siae:search_results')}")
@@ -284,7 +282,7 @@ def test_user_can_sign_in_with_email_containing_capital_letters(self):
         driver.find_element(By.CSS_SELECTOR, "input#id_username").send_keys("SIAE5@example.com")
         driver.find_element(By.CSS_SELECTOR, "input#id_password").send_keys(DEFAULT_PASSWORD)
 
-        driver.find_element(By.CSS_SELECTOR, "form button").click()
+        driver.find_element(By.CSS_SELECTOR, "form button[type='submit']").click()
 
     def test_user_wrong_credentials_should_see_error_message(self):
         user_siae = UserFactory(email="siae5@example.com", kind=User.KIND_SIAE)
@@ -294,7 +292,7 @@ def test_user_wrong_credentials_should_see_error_message(self):
         driver.find_element(By.CSS_SELECTOR, "input#id_username").send_keys(user_siae.email)
         driver.find_element(By.CSS_SELECTOR, "input#id_password").send_keys("password")
 
-        driver.find_element(By.CSS_SELECTOR, "form button").click()
+        driver.find_element(By.CSS_SELECTOR, "form button[type='submit']").click()
 
         # should not submit form
         self.assertEqual(driver.current_url, f"{self.live_server_url}{reverse('auth:login')}")
@@ -312,7 +310,7 @@ def test_user_empty_credentials_should_see_password_reset_message(self):
         driver.find_element(By.CSS_SELECTOR, "input#id_username").send_keys("existing-user@example.com")
         driver.find_element(By.CSS_SELECTOR, "input#id_password").send_keys("password")
 
-        driver.find_element(By.CSS_SELECTOR, "form button").click()
+        driver.find_element(By.CSS_SELECTOR, "form button[type='submit']").click()
 
         # should not submit form
         self.assertEqual(driver.current_url, f"{self.live_server_url}{reverse('auth:login')}")