diff --git a/app/comp/res_compat.py b/app/comp/res_compat.py
index 9749707ab7..00b6446e6a 100644
--- a/app/comp/res_compat.py
+++ b/app/comp/res_compat.py
@@ -175,15 +175,16 @@ class NotesTableCompat(ResultatsSemestre):
             dtype=float,
             index=self.etud_moy_gen.index,
         )
+        etud_moy_gen_dem_zero = self.etud_moy_gen * mask_inscr
         (
             self.etud_moy_gen_ranks,
             self.etud_moy_gen_ranks_int,
-        ) = moy_sem.comp_ranks_series(self.etud_moy_gen * mask_inscr)
+        ) = moy_sem.comp_ranks_series(etud_moy_gen_dem_zero)
         ues = self.formsemestre.query_ues()
         for ue in ues:
             moy_ue = self.etud_moy_ue[ue.id]
             self.ue_rangs[ue.id] = (
-                moy_sem.comp_ranks_series(moy_ue)[0],  # juste en chaine
+                moy_sem.comp_ranks_series(moy_ue * mask_inscr)[0],  # juste en chaine
                 int(moy_ue.count()),
             )
             # .count() -> nb of non NaN values
@@ -203,7 +204,7 @@ class NotesTableCompat(ResultatsSemestre):
                 )
                 # list() car pandas veut une sequence pour take()
                 # Rangs / moyenne générale:
-                group_moys_gen = self.etud_moy_gen[group_members]
+                group_moys_gen = etud_moy_gen_dem_zero[group_members]
                 self.moy_gen_rangs_by_group[group.id] = moy_sem.comp_ranks_series(
                     group_moys_gen
                 )
@@ -212,7 +213,7 @@ class NotesTableCompat(ResultatsSemestre):
                     group_moys_ue = self.etud_moy_ue[ue.id][group_members]
                     self.ue_rangs_by_group.setdefault(ue.id, {})[
                         group.id
-                    ] = moy_sem.comp_ranks_series(group_moys_ue)
+                    ] = moy_sem.comp_ranks_series(group_moys_ue * mask_inscr)
 
     def get_etud_rang(self, etudid: int) -> str:
         """Le rang (classement) de l'étudiant dans le semestre.