diff --git a/openfisca_france_local/communes/antony/base_ressources.py b/openfisca_france_local/communes/antony/base_ressources.py
index c723dbe4..c883221d 100644
--- a/openfisca_france_local/communes/antony/base_ressources.py
+++ b/openfisca_france_local/communes/antony/base_ressources.py
@@ -66,8 +66,9 @@ def formula(famille, period, parameters):
                           + (ressources_mensuelles_famille_n_1 / 4)
                           + (ressources_annuelles_famille_n_1 / 4)
                           )
-
-        ressources_considerees = min_(ressources_m_3, ressources_n_1)
+        # on ne compare les ressources recentes avec le N-1
+        # que si on a effectivement des ressources N-1
+        ressources_considerees = where(ressources_n_1 > 0, min_(ressources_m_3, ressources_n_1), ressources_m_3)
 
         return ressources_considerees