diff --git a/google/devtools/testing/v1/direct_access_service.proto b/google/devtools/testing/v1/direct_access_service.proto
index 8fb12da7e4847..2f8e900ab0f2c 100644
--- a/google/devtools/testing/v1/direct_access_service.proto
+++ b/google/devtools/testing/v1/direct_access_service.proto
@@ -273,7 +273,7 @@ message DeviceSession {
   oneof expiration {
     // Optional. The amount of time that a device will be initially allocated
     // for. This can eventually be extended with the UpdateDeviceSession RPC.
-    // Default: 30 minutes.
+    // Default: 15 minutes.
     google.protobuf.Duration ttl = 13 [(google.api.field_behavior) = OPTIONAL];
 
     // Optional. If the device is still in use at this time, any connections