1 files changed, 2 insertions, 2 deletions
diff --git a/google/ads/googleads/v2/resources/mobile_device_constant.proto b/google/ads/googleads/v2/resources/mobile_device_constant.proto
index 69de65c69..4c83d2341 100644
--- a/google/ads/googleads/v2/resources/mobile_device_constant.proto
+++ b/google/ads/googleads/v2/resources/mobile_device_constant.proto
@@ -40,12 +40,12 @@ message MobileDeviceConstant {
     pattern: "mobileDeviceConstants/{mobile_device_constant}"
   };
 
-  // Immutable. The resource name of the mobile device constant.
+  // Output only. The resource name of the mobile device constant.
   // Mobile device constant resource names have the form:
   //
   // `mobileDeviceConstants/{criterion_id}`
   string resource_name = 1 [
-    (google.api.field_behavior) = IMMUTABLE,
+    (google.api.field_behavior) = OUTPUT_ONLY,
     (google.api.resource_reference) = {
       type: "googleads.googleapis.com/MobileDeviceConstant"
     }