diff --git a/src/app/calculators/rugofondmultiple/en.json b/src/app/calculators/rugofondmultiple/en.json
index b5a8bcb3a810aa7b5cca1ca86560adcecf20bfd1..f341352609119d0d0def9a1b27416c2ce3b06715 100644
--- a/src/app/calculators/rugofondmultiple/en.json
+++ b/src/app/calculators/rugofondmultiple/en.json
@@ -14,8 +14,8 @@
     "If": "Slope",
     "a": "Strickler correction factor",
     "ZF1": "Upstream ramp bottom elevation",
-    "ZRR": "Lower upstream ramp bottom elevation",
-    "ZRL": "Upper upstream ramp bottom elevation",
+    "ZRR": "Upper upstream ramp bottom elevation",
+    "ZRL": "Lower upstream ramp bottom elevation",
     "NbT": "Number of flow sections",
     "L": "Total width of ramp",
     "Cd": "Discharge coefficient",
diff --git a/src/app/calculators/rugofondmultiple/fr.json b/src/app/calculators/rugofondmultiple/fr.json
index 0c9df4eeb6c6bdab26e125605710d967b4e0a9c1..95b7744ff3d5f3ace2cab383be27a55f08b69921 100644
--- a/src/app/calculators/rugofondmultiple/fr.json
+++ b/src/app/calculators/rugofondmultiple/fr.json
@@ -14,8 +14,8 @@
     "If": "Pente",
     "a": "Coefficient correcteur du Strickler",
     "ZF1": "Cote de fond amont rampe",
-    "ZRR": "Cote de radier gauche",
-    "ZRL": "Cote de radier droit",
+    "ZRR": "Cote de fond haut amont",
+    "ZRL": "Cote de fond bas amont",
     "NbT": "Nombre de tranche d'écoulement",
     "L": "Largeur totale de la rampe", 
     "Cd": "Coefficient de débit",