diff --git a/doc/man/8/ceph.rst b/doc/man/8/ceph.rst
index 7fefe58d692c3..c913b45de9f2c 100644
--- a/doc/man/8/ceph.rst
+++ b/doc/man/8/ceph.rst
@@ -1314,7 +1314,7 @@ Subcommand ``cache-mode`` specifies the caching mode for cache tier <pool>.
 
 Usage::
 
-	ceph osd tier cache-mode <poolname> writeback|readproxy|readonly|none
+	ceph osd tier cache-mode <poolname> writeback|proxy|readproxy|readonly|none
 
 Subcommand ``remove`` removes the tier <tierpool> (the second one) from base pool
 <pool> (the first one).
diff --git a/qa/workunits/cephtool/test.sh b/qa/workunits/cephtool/test.sh
index 2fa2d0d243a1c..5c22c30e1094c 100755
--- a/qa/workunits/cephtool/test.sh
+++ b/qa/workunits/cephtool/test.sh
@@ -350,20 +350,21 @@ function test_tiering_1()
   ceph osd pool ls detail -f json | jq '.[] | select(.pool_name == "slow2") | .application_metadata["rados"]' | grep '{}'
   ceph osd pool ls detail -f json | jq '.[] | select(.pool_name == "cache") | .application_metadata["rados"]' | grep '{}'
   ceph osd pool ls detail -f json | jq '.[] | select(.pool_name == "cache2") | .application_metadata["rados"]' | grep '{}'
-  # forward and proxy are removed/deprecated
+  # forward is removed/deprecated
   expect_false ceph osd tier cache-mode cache forward
   expect_false ceph osd tier cache-mode cache forward --yes-i-really-mean-it
-  expect_false ceph osd tier cache-mode cache proxy
-  expect_false ceph osd tier cache-mode cache proxy --yes-i-really-mean-it
   # test some state transitions
   ceph osd tier cache-mode cache writeback
   expect_false ceph osd tier cache-mode cache readonly
   expect_false ceph osd tier cache-mode cache readonly --yes-i-really-mean-it
+  ceph osd tier cache-mode cache proxy
   ceph osd tier cache-mode cache readproxy
   ceph osd tier cache-mode cache none
   ceph osd tier cache-mode cache readonly --yes-i-really-mean-it
   ceph osd tier cache-mode cache none
   ceph osd tier cache-mode cache writeback
+  ceph osd tier cache-mode cache proxy
+  ceph osd tier cache-mode cache writeback
   expect_false ceph osd tier cache-mode cache none
   expect_false ceph osd tier cache-mode cache readonly --yes-i-really-mean-it
   # test with dirty objects in the tier pool
@@ -371,7 +372,7 @@ function test_tiering_1()
   rados -p cache put /etc/passwd /etc/passwd
   flush_pg_stats
   # 1 dirty object in pool 'cache'
-  ceph osd tier cache-mode cache readproxy
+  ceph osd tier cache-mode cache proxy
   expect_false ceph osd tier cache-mode cache none
   expect_false ceph osd tier cache-mode cache readonly --yes-i-really-mean-it
   ceph osd tier cache-mode cache writeback
@@ -380,7 +381,7 @@ function test_tiering_1()
   rados -p cache cache-flush-evict-all
   flush_pg_stats
   # no dirty objects in pool 'cache'
-  ceph osd tier cache-mode cache readproxy
+  ceph osd tier cache-mode cache proxy
   ceph osd tier cache-mode cache none
   ceph osd tier cache-mode cache readonly --yes-i-really-mean-it
   TRIES=0
@@ -1114,7 +1115,7 @@ function test_mon_mds()
 
   # Removing tier should be permitted because the underlying pool is
   # replicated (#11504 case)
-  ceph osd tier cache-mode mds-tier readproxy
+  ceph osd tier cache-mode mds-tier proxy
   ceph osd tier remove-overlay fs_metadata
   ceph osd tier remove fs_metadata mds-tier
   ceph osd pool delete mds-tier mds-tier --yes-i-really-really-mean-it
diff --git a/src/mon/MonCommands.h b/src/mon/MonCommands.h
index d8b3cfbc535d4..0f2100e665d84 100644
--- a/src/mon/MonCommands.h
+++ b/src/mon/MonCommands.h
@@ -1199,7 +1199,7 @@ COMMAND_WITH_FLAG("osd tier remove "
     FLAG(DEPRECATED))
 COMMAND("osd tier cache-mode "
 	"name=pool,type=CephPoolname "
-	"name=mode,type=CephChoices,strings=writeback|readproxy|readonly|none "
+	"name=mode,type=CephChoices,strings=writeback|proxy|readproxy|readonly|none "
 	"name=yes_i_really_mean_it,type=CephBool,req=false",
 	"specify the caching mode for cache tier <pool>", "osd", "rw")
 COMMAND("osd tier set-overlay "
diff --git a/src/mon/OSDMonitor.cc b/src/mon/OSDMonitor.cc
index 69f5bae8cdaee..921c61da61799 100644
--- a/src/mon/OSDMonitor.cc
+++ b/src/mon/OSDMonitor.cc
@@ -13545,6 +13545,8 @@ bool OSDMonitor::prepare_command_impl(MonOpRequestRef op,
       ss << "unable to set cache-mode '" << pg_pool_t::get_cache_mode_name(mode)
          << "' on a '" << pg_pool_t::get_cache_mode_name(p->cache_mode)
          << "' pool; only '"
+         << pg_pool_t::get_cache_mode_name(pg_pool_t::CACHEMODE_PROXY)
+         << "','"
          << pg_pool_t::get_cache_mode_name(pg_pool_t::CACHEMODE_READPROXY)
         << "' allowed.";
       err = -EINVAL;