diff --git a/src/app/calculators/macrorugocompound/config.json b/src/app/calculators/macrorugocompound/config.json
index 79290dc661b94b9a3a9ed20ba698c467b6f8b728..cea0b83b54e3a0d7af8faf18acbcebdfbaff4780 100644
--- a/src/app/calculators/macrorugocompound/config.json
+++ b/src/app/calculators/macrorugocompound/config.json
@@ -47,11 +47,11 @@
                 "property": "inclinedApron"
             },
             {
-                "id": "ZRR",
+                "id": "ZRT",
                 "help": "pam/macrorugo.html#rugosite-de-fond"
             },
             {
-                "id": "ZRL",
+                "id": "ZRB",
                 "help": "pam/macrorugo.html#rugosite-de-fond"
             },
             "BR"
diff --git a/src/app/calculators/macrorugocompound/en.json b/src/app/calculators/macrorugocompound/en.json
index e333dde61a47c737b320d2b0e14969a57b41bada..74a0abf8977009c3f67e409db6174682f5d1b431 100644
--- a/src/app/calculators/macrorugocompound/en.json
+++ b/src/app/calculators/macrorugocompound/en.json
@@ -13,8 +13,8 @@
     "PBD": "Diameter",
     "PBH": "Height",
     "Cd0": "Shape (1 for round, 2 for square)",
-    "ZRL": "Left ramp bottom elevation",
-    "ZRR": "Right ramp bottom elevation",
+    "ZRB": "Lower upstream ramp bottom elevation",
+    "ZRT": "Upper upstream ramp bottom elevation",
     "BR": "Total width",
     "ZF1": "Upstream ramp bottom elevation",
     "B": "Width",
diff --git a/src/app/calculators/macrorugocompound/fr.json b/src/app/calculators/macrorugocompound/fr.json
index 8c276fbd027748aba2ba29fd15e3a39177eac7ac..642bdf907ef8e31a78b6fd0fee098dba84ffd1fa 100644
--- a/src/app/calculators/macrorugocompound/fr.json
+++ b/src/app/calculators/macrorugocompound/fr.json
@@ -13,8 +13,8 @@
     "PBD": "Diamètre",
     "PBH": "Hauteur",
     "Cd0": "Forme (1 pour rond, 2 pour carré)",
-    "ZRL": "Cote de radier gauche",
-    "ZRR": "Cote de radier droit",
+    "ZRB": "Cote de fond bas amont",
+    "ZRT": "Cote de fond haut amont",
     "BR": "Largeur totale",
     "ZF1": "Cote de fond amont rampe",
     "B": "Largeur",
diff --git a/src/app/calculators/rugofondmultiple/config.json b/src/app/calculators/rugofondmultiple/config.json
index a48accba61e58da9efbd2d4700140ba40df106c0..9758d8939e4d8644cf06263c92daa42573e874a1 100644
--- a/src/app/calculators/rugofondmultiple/config.json
+++ b/src/app/calculators/rugofondmultiple/config.json
@@ -37,7 +37,7 @@
                 "property": "rugofondType"
             },
             {
-                "id": "ZRH",
+                "id": "ZRT",
                 "allowEmpty": true
             },
             {
diff --git a/src/app/calculators/rugofondmultiple/en.json b/src/app/calculators/rugofondmultiple/en.json
index 54f8187ed08c3da607f85bab1ad1400de833552f..e16c1d7d3a704a4ba4db94c39eeb48bb04be427b 100644
--- a/src/app/calculators/rugofondmultiple/en.json
+++ b/src/app/calculators/rugofondmultiple/en.json
@@ -14,7 +14,7 @@
     "If": "Slope",
     "a": "Strickler correction factor",
     "ZF1": "Upstream ramp bottom elevation",
-    "ZRH": "Upper upstream ramp bottom elevation",
+    "ZRT": "Upper upstream ramp bottom elevation",
     "ZRB": "Lower upstream ramp bottom elevation",
     "NbT": "Number of flow sections",
     "L": "Total width of ramp",
diff --git a/src/app/calculators/rugofondmultiple/fr.json b/src/app/calculators/rugofondmultiple/fr.json
index 725789fdd2cc22192dc31bf25687c189a38beb56..6a2ab4707c815d11713958a3552d9315abb0d653 100644
--- a/src/app/calculators/rugofondmultiple/fr.json
+++ b/src/app/calculators/rugofondmultiple/fr.json
@@ -14,7 +14,7 @@
     "If": "Pente",
     "a": "Coefficient correcteur du Strickler",
     "ZF1": "Cote de fond amont rampe",
-    "ZRH": "Cote de fond haut amont",
+    "ZRT": "Cote de fond haut amont",
     "ZRB": "Cote de fond bas amont",
     "NbT": "Nombre de tranche d'écoulement",
     "L": "Largeur totale de la rampe",