diff --git a/backends/x11/x11.json b/backends/x11/x11.json
index 413ea7facb..ca4569053a 100644
--- a/backends/x11/x11.json
+++ b/backends/x11/x11.json
@@ -28,6 +28,7 @@
         "Name": "x11", 
         "Name[ca@valencia]": "X11", 
         "Name[ca]": "X11", 
+        "Name[de]": "X11", 
         "Name[pt]": "X11", 
         "Name[sr@ijekavian]": "Икс11", 
         "Name[sr@ijekavianlatin]": "X11",