diff --git a/manifests/pool.pp b/manifests/pool.pp
index 861ef24d..407c2fd5 100644
--- a/manifests/pool.pp
+++ b/manifests/pool.pp
@@ -46,9 +46,9 @@
 #   Optional. Default is undef.
 #   Increase or decrease the replica level of a pool.
 #
-# [*tag*] Pool tag.
+# [*application*] Application the pool is associated with.
 #   Optional. Default is undef.
-#   cephfs,rbd,rgw or freeform for custom application.
+#   cephfs, rbd, rgw or freeform for custom application.
 #
 # DEPRECATED PARAMETERS
 #
@@ -61,7 +61,7 @@ define ceph::pool (
   Integer[0] $pg_num = 64,
   Optional[Integer[0]] $pgp_num = undef,
   Optional[Integer[0]] $size = undef,
-  Optional[String[1]] $tag = undef,
+  Optional[String[1]] $application = undef,
   # DEPRECATED PARAMETERS
   Optional[Float[0]] $exec_timeout = undef,
 ) {
@@ -86,6 +86,6 @@ define ceph::pool (
     pgp_num     => $pgp_num,
     size        => $size,
     cluster     => $cluster,
-    application => $tag,
+    application => $application,
   }
 }
diff --git a/releasenotes/notes/rename-tag-c6beebada022f499.yaml b/releasenotes/notes/rename-tag-c6beebada022f499.yaml
new file mode 100644
index 00000000..2f3cd917
--- /dev/null
+++ b/releasenotes/notes/rename-tag-c6beebada022f499.yaml
@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    The ``ceph::pool::tag`` parameter has been renamed to the ``application``
+    parameter, due to conflict with metaparameters.
diff --git a/spec/defines/ceph_pool_spec.rb b/spec/defines/ceph_pool_spec.rb
index 7938cf82..7a2e8680 100644
--- a/spec/defines/ceph_pool_spec.rb
+++ b/spec/defines/ceph_pool_spec.rb
@@ -27,11 +27,11 @@ describe 'ceph::pool' do
     describe "create with custom params" do
       let :params do
         {
-          :ensure  => 'present',
-          :pg_num  => 4,
-          :pgp_num => 3,
-          :size    => 2,
-          :tag     => 'rbd',
+          :ensure      => 'present',
+          :pg_num      => 4,
+          :pgp_num     => 3,
+          :size        => 2,
+          :application => 'rbd',
         }
       end