diff --git a/src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php b/src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php
index <HASH>..<HASH> 100644
--- a/src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php
+++ b/src/Psalm/Internal/Provider/FunctionReturnTypeProvider.php
@@ -48,6 +48,7 @@ class FunctionReturnTypeProvider
 
     /**
      * @param  class-string<FunctionReturnTypeProviderInterface> $class
+     * @psalm-suppress PossiblyUnusedParam
      * @return void
      */
     public function register(string $class)
Suppress PossiblyUnusedParam for PHP <I>