diff --git a/openfisca_tunisia_pension/parameters/retraite/cnrps/bareme_annuite.yaml b/openfisca_tunisia_pension/parameters/retraite/cnrps/bareme_annuite.yaml
index 2c529c8..363c3b3 100644
--- a/openfisca_tunisia_pension/parameters/retraite/cnrps/bareme_annuite.yaml
+++ b/openfisca_tunisia_pension/parameters/retraite/cnrps/bareme_annuite.yaml
@@ -8,29 +8,25 @@ brackets:
       value: 0.005
 - threshold:
     1959-02-01:
-      value: null
+      value: 160
     1985-01-01:
       value: 40
   rate:
     1959-02-01:
-      value: null
+      value: 0
     1985-01-01:
       value: 0.0075
 - threshold:
-    1959-02-01:
-      value: null
     1985-01-01:
       value: 80
   rate:
-    1959-02-01:
-      value: null
     1985-01-01:
       value: 0.005
 - threshold:
-    1959-02-01:
+    1985-01-01:
       value: 160
   rate:
-    1959-02-01:
+    1985-01-01:
       value: 0
 metadata:
   threshold_unit: trimestre