diff --git a/includes/pager/TablePager.php b/includes/pager/TablePager.php
index 1896be026db..b57078717f3 100644
--- a/includes/pager/TablePager.php
+++ b/includes/pager/TablePager.php
@@ -465,7 +465,8 @@ abstract class TablePager extends IndexPager {
 	 * need more context.
 	 *
 	 * @param string $name The database field name
-	 * @param string $value The value retrieved from the database
+	 * @param string|null $value The value retrieved from the database, or null if
+	 *   the row doesn't contain this field
 	 */
 	abstract public function formatValue( $name, $value );
 
diff --git a/includes/specials/pagers/AllMessagesTablePager.php b/includes/specials/pagers/AllMessagesTablePager.php
index 52f434eb4c0..5e19bfb66c8 100644
--- a/includes/specials/pagers/AllMessagesTablePager.php
+++ b/includes/specials/pagers/AllMessagesTablePager.php
@@ -273,7 +273,7 @@ class AllMessagesTablePager extends TablePager {
 
 	/**
 	 * @param string $field
-	 * @param string $value
+	 * @param string|null $value
 	 * @return string HTML
 	 */
 	public function formatValue( $field, $value ) {
diff --git a/includes/specials/pagers/BlockListPager.php b/includes/specials/pagers/BlockListPager.php
index 70581ee0f3c..89f85d27f2d 100644
--- a/includes/specials/pagers/BlockListPager.php
+++ b/includes/specials/pagers/BlockListPager.php
@@ -121,7 +121,7 @@ class BlockListPager extends TablePager {
 
 	/**
 	 * @param string $name
-	 * @param string $value
+	 * @param string|null $value
 	 * @return string
 	 * @suppress PhanTypeArraySuspicious
 	 */
diff --git a/includes/specials/pagers/ImageListPager.php b/includes/specials/pagers/ImageListPager.php
index 963275644d8..faf15383834 100644
--- a/includes/specials/pagers/ImageListPager.php
+++ b/includes/specials/pagers/ImageListPager.php
@@ -454,7 +454,7 @@ class ImageListPager extends TablePager {
 
 	/**
 	 * @param string $field
-	 * @param string $value
+	 * @param string|null $value
 	 * @return Message|string|int The return type depends on the value of $field:
 	 *   - thumb: string
 	 *   - img_timestamp: string
diff --git a/includes/specials/pagers/ProtectedPagesPager.php b/includes/specials/pagers/ProtectedPagesPager.php
index dd16497f1e9..37df13c1212 100644
--- a/includes/specials/pagers/ProtectedPagesPager.php
+++ b/includes/specials/pagers/ProtectedPagesPager.php
@@ -137,7 +137,7 @@ class ProtectedPagesPager extends TablePager {
 
 	/**
 	 * @param string $field
-	 * @param string $value
+	 * @param string|null $value
 	 * @return string HTML
 	 * @throws MWException
 	 */