diff --git a/src/core/tsi/alts/handshaker/alts_handshaker_client.cc b/src/core/tsi/alts/handshaker/alts_handshaker_client.cc
index 5c5a407f54f..61927276195 100644
--- a/src/core/tsi/alts/handshaker/alts_handshaker_client.cc
+++ b/src/core/tsi/alts/handshaker/alts_handshaker_client.cc
@@ -508,8 +508,8 @@ static grpc_byte_buffer* get_serialized_start_client(
                                           upb_strview_makez(ptr->data));
     ptr = ptr->next;
   }
-  grpc_gcp_StartClientHandshakeReq_set_max_frame_size(start_client,
-                                                      client->max_frame_size);
+  grpc_gcp_StartClientHandshakeReq_set_max_frame_size(
+      start_client, static_cast<uint32_t>(client->max_frame_size));
   return get_serialized_handshaker_req(req, arena.ptr());
 }
 
@@ -569,8 +569,8 @@ static grpc_byte_buffer* get_serialized_start_server(
                                                             arena.ptr());
   grpc_gcp_RpcProtocolVersions_assign_from_struct(
       server_version, arena.ptr(), &client->options->rpc_versions);
-  grpc_gcp_StartServerHandshakeReq_set_max_frame_size(start_server,
-                                                      client->max_frame_size);
+  grpc_gcp_StartServerHandshakeReq_set_max_frame_size(
+      start_server, static_cast<uint32_t>(client->max_frame_size));
   return get_serialized_handshaker_req(req, arena.ptr());
 }
 
diff --git a/src/core/tsi/alts/handshaker/alts_tsi_handshaker.cc b/src/core/tsi/alts/handshaker/alts_tsi_handshaker.cc
index b2687825d17..2a925182d3f 100644
--- a/src/core/tsi/alts/handshaker/alts_tsi_handshaker.cc
+++ b/src/core/tsi/alts/handshaker/alts_tsi_handshaker.cc
@@ -41,9 +41,6 @@
 #include "src/core/tsi/alts/handshaker/alts_tsi_utils.h"
 #include "src/core/tsi/alts/zero_copy_frame_protector/alts_zero_copy_grpc_protector.h"
 
-const size_t kMinFrameSize = 16 * 1024;
-const size_t kMaxFrameSize = 128 * 1024;
-
 /* Main struct for ALTS TSI handshaker. */
 struct alts_tsi_handshaker {
   tsi_handshaker base;
@@ -166,17 +163,17 @@ static tsi_result handshaker_result_create_zero_copy_grpc_protector(
 
   // In case the peer does not send max frame size (e.g. peer is gRPC Go or
   // peer uses an old binary), the negotiated frame size is set to
-  // kMinFrameSize (ignoring max_output_protected_frame_size value if
+  // kTsiAltsMinFrameSize (ignoring max_output_protected_frame_size value if
   // present). Otherwise, it is based on peer and user specified max frame
   // size (if present).
-  size_t max_frame_size = kMinFrameSize;
+  size_t max_frame_size = kTsiAltsMinFrameSize;
   if (result->max_frame_size) {
     size_t peer_max_frame_size = result->max_frame_size;
     max_frame_size = std::min<size_t>(peer_max_frame_size,
                                       max_output_protected_frame_size == nullptr
-                                          ? kMaxFrameSize
+                                          ? kTsiAltsMaxFrameSize
                                           : *max_output_protected_frame_size);
-    max_frame_size = std::max<size_t>(max_frame_size, kMinFrameSize);
+    max_frame_size = std::max<size_t>(max_frame_size, kTsiAltsMinFrameSize);
   }
   max_output_protected_frame_size = &max_frame_size;
   gpr_log(GPR_DEBUG,
@@ -622,7 +619,7 @@ tsi_result alts_tsi_handshaker_create(
   handshaker->options = grpc_alts_credentials_options_copy(options);
   handshaker->max_frame_size = user_specified_max_frame_size != 0
                                    ? user_specified_max_frame_size
-                                   : kMaxFrameSize;
+                                   : kTsiAltsMaxFrameSize;
   handshaker->base.vtable = handshaker->use_dedicated_cq
                                 ? &handshaker_vtable_dedicated
                                 : &handshaker_vtable;
diff --git a/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h b/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h
index 6959c563a5e..e1ae985a84d 100644
--- a/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h
+++ b/src/core/tsi/alts/handshaker/alts_tsi_handshaker.h
@@ -39,9 +39,9 @@
 const size_t kTsiAltsNumOfPeerProperties = 5;
 
 // Frame size negotiation extends send frame size range to
-// [kMinFrameSize, kMaxFrameSize]
-ABSL_CONST_INIT extern const size_t kMinFrameSize;
-ABSL_CONST_INIT extern const size_t kMaxFrameSize;
+// [kTsiAltsMinFrameSize, kTsiAltsMaxFrameSize].
+const size_t kTsiAltsMinFrameSize = 16 * 1024;
+const size_t kTsiAltsMaxFrameSize = 128 * 1024;
 
 typedef struct alts_tsi_handshaker alts_tsi_handshaker;
 
diff --git a/test/core/tsi/alts/handshaker/alts_tsi_handshaker_test.cc b/test/core/tsi/alts/handshaker/alts_tsi_handshaker_test.cc
index 8f38640ef67..2127e980488 100644
--- a/test/core/tsi/alts/handshaker/alts_tsi_handshaker_test.cc
+++ b/test/core/tsi/alts/handshaker/alts_tsi_handshaker_test.cc
@@ -296,7 +296,7 @@ static void on_client_next_success_cb(tsi_result status, void* user_data,
   size_t actual_max_frame_size;
   tsi_zero_copy_grpc_protector_max_frame_size(zero_copy_protector,
                                               &actual_max_frame_size);
-  GPR_ASSERT(actual_max_frame_size == kMaxFrameSize);
+  GPR_ASSERT(actual_max_frame_size == kTsiAltsMaxFrameSize);
   tsi_zero_copy_grpc_protector_destroy(zero_copy_protector);
   /* Validate peer identity. */
   tsi_peer peer;
@@ -370,7 +370,7 @@ static void on_server_next_success_cb(tsi_result status, void* user_data,
   size_t actual_max_frame_size;
   tsi_zero_copy_grpc_protector_max_frame_size(zero_copy_protector,
                                               &actual_max_frame_size);
-  GPR_ASSERT(actual_max_frame_size == kMinFrameSize);
+  GPR_ASSERT(actual_max_frame_size == kTsiAltsMinFrameSize);
   tsi_zero_copy_grpc_protector_destroy(zero_copy_protector);
   /* Validate peer identity. */
   tsi_peer peer;