diff --git a/docs/data/data-grid/localization/data.json b/docs/data/data-grid/localization/data.json
index 40944dec87d98..6a183c97499c5 100644
--- a/docs/data/data-grid/localization/data.json
+++ b/docs/data/data-grid/localization/data.json
@@ -99,7 +99,7 @@
     "languageTag": "de-DE",
     "importName": "deDE",
     "localeName": "German",
-    "missingKeysCount": 1,
+    "missingKeysCount": 0,
     "totalKeysCount": 133,
     "githubLink": "https://github.com/mui/mui-x/blob/master/packages/x-data-grid/src/locales/deDE.ts"
   },
diff --git a/packages/x-data-grid/src/locales/deDE.ts b/packages/x-data-grid/src/locales/deDE.ts
index 306d254f9d1a0..73777d820847a 100644
--- a/packages/x-data-grid/src/locales/deDE.ts
+++ b/packages/x-data-grid/src/locales/deDE.ts
@@ -114,7 +114,7 @@ const deDEGrid: Partial<GridLocaleText> = {
   'headerFilterOperator>=': 'Größer als oder gleich',
   'headerFilterOperator<': 'Kleiner als',
   'headerFilterOperator<=': 'Kleiner als oder gleich',
-  // headerFilterClear: 'Clear filter',
+  headerFilterClear: 'Filter löschen',
 
   // Filter values text
   filterValueAny: 'Beliebig',