diff --git a/phpBB/install/schemas/schema.json b/phpBB/install/schemas/schema.json
index 3d819e19b9..176691f1a6 100644
--- a/phpBB/install/schemas/schema.json
+++ b/phpBB/install/schemas/schema.json
@@ -800,26 +800,22 @@
                 "UINT:20",
                 0
             ],
-            "enable_shadow_prune": {
-                "0": "BOOL",
-                "1": 0,
-                "after": "prune_freq"
-            },
-            "prune_shadow_days": {
-                "0": "UINT",
-                "1": 7,
-                "after": "enable_shadow_prune"
-            },
-            "prune_shadow_freq": {
-                "0": "UINT",
-                "1": 1,
-                "after": "prune_shadow_freq"
-            },
-            "prune_shadow_next": {
-                "0": "INT:11",
-                "1": 0,
-                "after": "prune_shadow_freq"
-            },
+            "enable_shadow_prune": [
+                "BOOL",
+                0
+            ],
+            "prune_shadow_days": [
+                "UINT",
+                7
+            ],
+            "prune_shadow_freq": [
+                "UINT",
+                1
+            ],
+            "prune_shadow_next": [
+                "INT:11",
+                0
+            ],
             "forum_posts_approved": [
                 "UINT",
                 0
diff --git a/phpBB/phpbb/db/migration/data/v310/prune_shadow_topics.php b/phpBB/phpbb/db/migration/data/v310/prune_shadow_topics.php
index 1e7cfb5acb..d625b1fe6e 100644
--- a/phpBB/phpbb/db/migration/data/v310/prune_shadow_topics.php
+++ b/phpBB/phpbb/db/migration/data/v310/prune_shadow_topics.php
@@ -21,10 +21,10 @@ class prune_shadow_topics extends \phpbb\db\migration\migration
 		return array(
 			'add_columns'		=> array(
 				$this->table_prefix . 'forums'		=> array(
-					'enable_shadow_prune'	=> array('BOOL', 0, 'after' => 'prune_freq'),
-					'prune_shadow_days'	=> array('UINT', 7, 'after' => 'enable_shadow_prune'),
-					'prune_shadow_freq'	=> array('UINT', 1, 'after' => 'prune_shadow_freq'),
-					'prune_shadow_next'	=> array('INT:11', 0, 'after' => 'prune_shadow_freq'),
+					'enable_shadow_prune'	=> array('BOOL', 0),
+					'prune_shadow_days'	=> array('UINT', 7),
+					'prune_shadow_freq'	=> array('UINT', 1),
+					'prune_shadow_next'	=> array('INT:11', 0),
 				),
 			),
 		);