diff --git a/src/Fixer/Alias/NoAliasFunctionsFixer.php b/src/Fixer/Alias/NoAliasFunctionsFixer.php
index 22f05dab2a7..71aff5e339d 100644
--- a/src/Fixer/Alias/NoAliasFunctionsFixer.php
+++ b/src/Fixer/Alias/NoAliasFunctionsFixer.php
@@ -30,7 +30,7 @@
  */
 final class NoAliasFunctionsFixer extends AbstractFixer implements ConfigurationDefinitionFixerInterface
 {
-    /** @var array<string, string> stores alias (key) - master (value) functions mapping */
+    /** @var array<string, array<int|string>|string> stores alias (key) - master (value) functions mapping */
     private $aliases = [];
 
     /** @var array<string, string> stores alias (key) - master (value) functions mapping */