diff --git a/csi.proto b/csi.proto
index 485b8400..ee73aa7a 100644
--- a/csi.proto
+++ b/csi.proto
@@ -988,8 +988,7 @@ message GetCapacityResponse {
   // a maximum size for individual volumes and leave it unset
   // otherwise. COs MAY use it to make decision about
   // where to create volumes.
-  google.protobuf.Int64Value maximum_volume_size = 2
-    [(alpha_field) = true];
+  google.protobuf.Int64Value maximum_volume_size = 2;
 
   // The smallest size that may be used in a
   // CreateVolumeRequest.capacity_range.limit_bytes field
diff --git a/spec.md b/spec.md
index 5c9c4e54..bd537fee 100644
--- a/spec.md
+++ b/spec.md
@@ -1637,8 +1637,7 @@ message GetCapacityResponse {
   // a maximum size for individual volumes and leave it unset
   // otherwise. COs MAY use it to make decision about
   // where to create volumes.
-  google.protobuf.Int64Value maximum_volume_size = 2
-    [(alpha_field) = true];
+  google.protobuf.Int64Value maximum_volume_size = 2;
 
   // The smallest size that may be used in a
   // CreateVolumeRequest.capacity_range.limit_bytes field