diff --git a/src/openrpc/device.json b/src/openrpc/device.json
index fe208f245..9018c7db1 100644
--- a/src/openrpc/device.json
+++ b/src/openrpc/device.json
@@ -838,10 +838,7 @@
           "stereo": {
             "type": "boolean"
           },
-          "dolbyDigital5.1": {
-            "type": "boolean"
-          },
-          "dolbyDigital5.1+": {
+          "dolbyDigital51": {
             "type": "boolean"
           },
           "dolbyAtmos": {
diff --git a/src/schemas/types.json b/src/schemas/types.json
index 5d5eed60e..653ea6d86 100644
--- a/src/schemas/types.json
+++ b/src/schemas/types.json
@@ -35,8 +35,7 @@
             "type": "string",
             "enum": [
                 "stereo",
-                "dolbyDigital5.1",
-                "dolbyDigital5.1+",
+                "dolbyDigital51",
                 "dolbyAtmos"
             ]
         },