diff --git a/google/cloud/certificatemanager/v1/certificate_manager.proto b/google/cloud/certificatemanager/v1/certificate_manager.proto
index d3e2449c84de9..6cfbf6ac0c881 100644
--- a/google/cloud/certificatemanager/v1/certificate_manager.proto
+++ b/google/cloud/certificatemanager/v1/certificate_manager.proto
@@ -22,6 +22,7 @@ import "google/api/field_behavior.proto";
 import "google/api/resource.proto";
 import "google/cloud/certificatemanager/v1/certificate_issuance_config.proto";
 import "google/longrunning/operations.proto";
+import "google/protobuf/empty.proto";
 import "google/protobuf/field_mask.proto";
 import "google/protobuf/timestamp.proto";
 
@@ -1105,7 +1106,7 @@ message CertificateMapEntry {
   }
 
   // A set of Certificates defines for the given `hostname`. There can be
-  // defined up to fifteen certificates in each Certificate Map Entry. Each
+  // defined up to four certificates in each Certificate Map Entry. Each
   // certificate must match pattern `projects/*/locations/*/certificates/*`.
   repeated string certificates = 7 [(google.api.resource_reference) = {
     type: "certificatemanager.googleapis.com/Certificate"