diff --git a/src/client/src/containers/Search/Search.js b/src/client/src/containers/Search/Search.js
index 59730993..a13dff64 100644
--- a/src/client/src/containers/Search/Search.js
+++ b/src/client/src/containers/Search/Search.js
@@ -13,7 +13,6 @@ import {
   useSearchTerms,
 } from "../../services/Store/hooks/search";
 import { normalizeCodeCommunes } from "../../utils/code-commune/code-commune";
-import { normalizeCodeDepartement } from "../../utils/code-departement/code-departement";
 import { useFileDownload } from "../../utils/file-download/hooks";
 import { useSort } from "../../utils/search-table/hooks";
 import divisionsNaf from "./divisions-naf.json";
@@ -31,9 +30,7 @@ const formatLocationFilter = (filters) => {
     codesCommunes: normalizeCodeCommunes(
       locationFilters?.commune?.map(prop("value")) || []
     ),
-    departements: normalizeCodeDepartement(
-      locationFilters?.departement?.map(prop("value")) || []
-    ),
+    departements: locationFilters?.departement?.map(prop("value")) || [],
   };
 };
 
diff --git a/src/client/src/utils/code-departement/code-departement.js b/src/client/src/utils/code-departement/code-departement.js
deleted file mode 100644
index 895d1a6e..00000000
--- a/src/client/src/utils/code-departement/code-departement.js
+++ /dev/null
@@ -1,16 +0,0 @@
-const CORSE_DEP = ["2A", "2B"];
-const CORSE_DEP_CODES = {
-  "2A": ["2A", "20"],
-  "2B": ["2B", "21"],
-};
-
-const getCodeDepartementForCorse = (codeDep) => {
-  if (CORSE_DEP.includes(codeDep)) {
-    return CORSE_DEP_CODES[codeDep];
-  }
-
-  return [codeDep];
-};
-export const normalizeCodeDepartement = (codedepartement) => {
-  return codedepartement.flatMap(getCodeDepartementForCorse);
-};
diff --git a/src/server/src/utils/elastic.js b/src/server/src/utils/elastic.js
index e84b4f67..5177d82c 100644
--- a/src/server/src/utils/elastic.js
+++ b/src/server/src/utils/elastic.js
@@ -14,7 +14,7 @@ const filtersFieldMap = {
   etats: "etatAdministratifEtablissement",
   activites: "domaineActivite",
   codesCommunes: "codeCommuneEtablissement",
-  departements: "departementEtablissement",
+  departement: "departement",
   codesPostaux: "codesPostalEtablissement",
   tranchesEffectifs: "trancheEffectifsEtablissement",
 };
@@ -214,7 +214,7 @@ export const getElasticQueryParams = (req) => {
   const activites = req.query["activites"] || [];
   const codesCommunes = req.query["codesCommunes"] || [];
   const codesPostaux = req.query["codesPostaux"] || [];
-  const departements = req.query["departements"] || [];
+  const departement = req.query["departements"] || [];
   const tranchesEffectifs = req.query["tranchesEffectifs"] || [];
   const dirigeant = req.query["dirigeant"]
     ? JSON.parse(req.query["dirigeant"])
@@ -233,7 +233,7 @@ export const getElasticQueryParams = (req) => {
     etats,
     activites,
     codesCommunes,
-    departements,
+    departement,
     codesPostaux,
     tranchesEffectifs,
     dirigeant,