diff --git a/src/app/calculators/cloisons/config.json b/src/app/calculators/cloisons/config.json
index e8e19e4a60d7b538f31c93ce30881db7b34b01c7..4aeb04671c276b0104fad54c3c779b3c2d4ee438 100644
--- a/src/app/calculators/cloisons/config.json
+++ b/src/app/calculators/cloisons/config.json
@@ -41,6 +41,7 @@
             },
             "h1",
             "L",
+            "W",
             "CdWSL",
             "CdWR",
             "CdGR",
diff --git a/src/app/calculators/cloisons/en.json b/src/app/calculators/cloisons/en.json
index 80f95f219e55d4cfe8a1df2689a94e604b3b8311..2a41cd7cf134e047a9369211cb88e120b0f95bf6 100644
--- a/src/app/calculators/cloisons/en.json
+++ b/src/app/calculators/cloisons/en.json
@@ -1,6 +1,7 @@
 {
     "Q": "Total discharge",
     "P": "Sill",
+    "W": "Gate opening",
     "ZR": "Upstream bed elevation",
     "PB": "Pool mean depth",
     "h1": "Head",
diff --git a/src/app/calculators/cloisons/fr.json b/src/app/calculators/cloisons/fr.json
index fd09e504d4a2885b19a3724e6ae64b88c0aeb049..bf30fb990e193a7ab9ee85903d74e85db7d313e8 100644
--- a/src/app/calculators/cloisons/fr.json
+++ b/src/app/calculators/cloisons/fr.json
@@ -1,6 +1,7 @@
 {
     "Q": "Débit total",
     "P": "Pelle",
+    "W": "Ouverture de vanne",
 
     "select_structure_SeuilTriangulaire": "Seuil triangulaire",
     "select_structure_SeuilTriangulaireTrunc": "Seuil triangulaire tronqué",