diff --git a/app/models/evaluations.py b/app/models/evaluations.py
index 73659aa3..63fac264 100644
--- a/app/models/evaluations.py
+++ b/app/models/evaluations.py
@@ -536,7 +536,9 @@ def check_convert_evaluation_args(moduleimpl: ModuleImpl, data: dict):
         raise ScoValueError("invalid note_max value (must be positive or null)")
     data["note_max"] = note_max
     # --- coefficient
-    coef = data.get("coefficient", 1.0) or 1.0
+    coef = data.get("coefficient", None)
+    if coef is None:
+        coef = 1.0
     try:
         coef = float(coef)
     except ValueError as exc:
diff --git a/app/scodoc/sco_evaluation_edit.py b/app/scodoc/sco_evaluation_edit.py
index 0bd8333b..125d4880 100644
--- a/app/scodoc/sco_evaluation_edit.py
+++ b/app/scodoc/sco_evaluation_edit.py
@@ -46,7 +46,6 @@ from app.scodoc.sco_exceptions import ScoValueError
 from app.scodoc.TrivialFormulator import TrivialFormulator
 from app.scodoc import html_sco_header
 from app.scodoc import sco_evaluations
-from app.scodoc import sco_evaluation_db
 from app.scodoc import sco_moduleimpl
 from app.scodoc import sco_preferences
 
diff --git a/app/templates/assiduites/pages/visu_assi.j2 b/app/templates/assiduites/pages/visu_assi.j2
index 07fb6974..3f1c3b49 100644
--- a/app/templates/assiduites/pages/visu_assi.j2
+++ b/app/templates/assiduites/pages/visu_assi.j2
@@ -22,7 +22,7 @@
 {{tableau | safe}}
 
 <div class=""help">
-Les comptes sont exprimés en {{ assi_metric }}.
+Les comptes sont exprimés en {{ assi_metric | lower}}s.
 </div>
 
 <script>