diff --git a/phpstan/baseline.neon b/phpstan/baseline.neon
index 573d7554a..e747a8e40 100644
--- a/phpstan/baseline.neon
+++ b/phpstan/baseline.neon
@@ -25,11 +25,6 @@ parameters:
 			count: 1
 			path: ../src/Composer/Command/BaseCommand.php
 
-		-
-			message: "#^Call to function is_array\\(\\) with string will always evaluate to false\\.$#"
-			count: 1
-			path: ../src/Composer/Command/DiagnoseCommand.php
-
 		-
 			message: "#^Result of && is always false\\.$#"
 			count: 1
diff --git a/src/Composer/Command/DiagnoseCommand.php b/src/Composer/Command/DiagnoseCommand.php
index f36ee3343..a288109c7 100644
--- a/src/Composer/Command/DiagnoseCommand.php
+++ b/src/Composer/Command/DiagnoseCommand.php
@@ -413,7 +413,7 @@ EOT
     }
 
     /**
-     * @param bool|string|\Exception $result
+     * @param bool|string|string[]|\Exception $result
      */
     private function outputResult($result)
     {