diff --git a/stages/test_files/HYPERPLANNING.txt b/stages/test_files/HYPERPLANNING.csv
similarity index 95%
rename from stages/test_files/HYPERPLANNING.txt
rename to stages/test_files/HYPERPLANNING.csv
index a5a7d81..0a85f99 100644
--- a/stages/test_files/HYPERPLANNING.txt
+++ b/stages/test_files/HYPERPLANNING.csv
@@ -29,3 +29,4 @@ Dupond Jeanne;;Sém. enfance 2;[2ASEFE c-d E S2];8.00
 Dupond Jeanne;;Sém. enfance 2;[2ASEFE c-d E S2];8.00
 Dupond Jeanne;;Sém. enfance 2;[2ASEFE c-d E S2];8.00
 Dupond Jeanne;;Travail personnel;[2ASEFE c-d E S2];1'054.00
+Nom Inconnu;;Autre travail;3MPS ASE1;8.00
diff --git a/stages/tests.py b/stages/tests.py
index 6867924..0d089e7 100644
--- a/stages/tests.py
+++ b/stages/tests.py
@@ -465,12 +465,13 @@ class ImportTests(TestCase):
         teacher = Teacher.objects.create(
             first_name='Jeanne', last_name='Dupond', birth_date='1974-08-08'
         )
-        path = os.path.join(os.path.dirname(__file__), 'test_files', 'HYPERPLANNING.txt')
+        path = os.path.join(os.path.dirname(__file__), 'test_files', 'HYPERPLANNING.csv')
         self.client.login(username='me', password='mepassword')
         with open(path, 'rb') as fh:
             response = self.client.post(reverse('import-hp'), {'upload': fh}, follow=True)
         self.assertContains(response, "Objets créés : 13")
         self.assertContains(response, "Objets modifiés : 10")
+        self.assertContains(response, "Impossible de trouver «Nom Inconnu» dans la liste des enseignant-e-s")
         self.assertEqual(teacher.course_set.count(), 13)
 
     def test_import_hp_contacts(self):
diff --git a/stages/views.py b/stages/views.py
index 2fe2b22..8243c92 100644
--- a/stages/views.py
+++ b/stages/views.py
@@ -422,8 +422,16 @@ class HPImportView(ImportViewBase):
             if (line['LIBELLE_MAT'] == '' or line['NOMPERSO_DIP'] == '' or line['TOTAL'] == ''):
                 continue
 
+            try:
+                teacher = profs[line['NOMPERSO_ENS']]
+            except KeyError:
+                errors.append(
+                    "Impossible de trouver «%s» dans la liste des enseignant-e-s" % line['NOMPERSO_ENS']
+                )
+                continue
+
             obj, created = Course.objects.get_or_create(
-                teacher=profs[line['NOMPERSO_ENS']],
+                teacher=teacher,
                 subject=line['LIBELLE_MAT'],
                 public=line['NOMPERSO_DIP'],
             )