diff --git a/deps/rabbit/BUILD.bazel b/deps/rabbit/BUILD.bazel
index c4ab0a9437..68a489c93c 100644
--- a/deps/rabbit/BUILD.bazel
+++ b/deps/rabbit/BUILD.bazel
@@ -83,8 +83,6 @@ _APP_ENV = """[
 	                          {exit_on_close, false}
 	                         ]},
 	    {ssl_apps, [asn1, crypto, public_key, ssl]},
-	    %% classic queue storage implementation version
-	    {classic_queue_default_version, 2},
 	    %% see rabbitmq-server#227 and related tickets.
 	    %% msg_store_credit_disc_bound only takes effect when
 	    %% messages are persisted to the message store. If messages
diff --git a/deps/rabbit/Makefile b/deps/rabbit/Makefile
index e59b5e0e88..11d67fd0b7 100644
--- a/deps/rabbit/Makefile
+++ b/deps/rabbit/Makefile
@@ -66,8 +66,6 @@ define PROJECT_ENV
 	                          {exit_on_close, false}
 	                         ]},
 	    {ssl_apps, [asn1, crypto, public_key, ssl]},
-	    %% classic queue storage implementation version
-	    {classic_queue_default_version, 2},
 	    %% see rabbitmq-server#227 and related tickets.
 	    %% msg_store_credit_disc_bound only takes effect when
 	    %% messages are persisted to the message store. If messages
diff --git a/deps/rabbit/priv/schema/rabbit.schema b/deps/rabbit/priv/schema/rabbit.schema
index 4cf9e8dea7..2fe114c4a6 100644
--- a/deps/rabbit/priv/schema/rabbit.schema
+++ b/deps/rabbit/priv/schema/rabbit.schema
@@ -2558,6 +2558,7 @@ end}.
 %% Backing queue version
 %%
 
+%% DEPRECATED. Not used since RabbitMQ 4.0
 {mapping, "classic_queue.default_version", "rabbit.classic_queue_default_version", [
   {datatype, integer},
   {validators, ["non_zero_positive_integer"]}