diff --git a/includes/actions/CachedAction.php b/includes/actions/CachedAction.php
index 32efc684278..bc4df349b26 100644
--- a/includes/actions/CachedAction.php
+++ b/includes/actions/CachedAction.php
@@ -110,7 +110,7 @@ abstract class CachedAction extends FormlessAction implements ICacheHelper {
 	 *
 	 * @since 1.20
 	 *
-	 * @param {function} $computeFunction
+	 * @param callable $computeFunction
 	 * @param array|mixed $args
 	 * @param string|null $key
 	 *
@@ -128,7 +128,7 @@ abstract class CachedAction extends FormlessAction implements ICacheHelper {
 	 *
 	 * @since 1.20
 	 *
-	 * @param {function} $computeFunction
+	 * @param callable $computeFunction
 	 * @param array $args
 	 * @param string|null $key
 	 */
diff --git a/includes/cache/CacheHelper.php b/includes/cache/CacheHelper.php
index 695eac3a05a..401c2b96209 100644
--- a/includes/cache/CacheHelper.php
+++ b/includes/cache/CacheHelper.php
@@ -55,7 +55,7 @@ interface ICacheHelper {
 	 *
 	 * @since 1.20
 	 *
-	 * @param {function} $computeFunction
+	 * @param callable $computeFunction
 	 * @param array|mixed $args
 	 * @param string|null $key
 	 *
@@ -255,7 +255,7 @@ class CacheHelper implements ICacheHelper {
 	 *
 	 * @since 1.20
 	 *
-	 * @param {function} $computeFunction
+	 * @param callable $computeFunction
 	 * @param array|mixed $args
 	 * @param string|null $key
 	 *