diff --git a/psalm.xml.dist b/psalm.xml.dist
index 2224d90..b64f292 100755
--- a/psalm.xml.dist
+++ b/psalm.xml.dist
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <psalm
-    totallyTyped="true"
+    errorLevel="1"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
diff --git a/tests/acceptance/Prophecy.feature b/tests/acceptance/Prophecy.feature
index 5188c85..2841760 100644
--- a/tests/acceptance/Prophecy.feature
+++ b/tests/acceptance/Prophecy.feature
@@ -7,7 +7,7 @@ Feature: Prophecy
     Given I have the following config
       """
       <?xml version="1.0"?>
-      <psalm totallyTyped="true" %s>
+      <psalm errorLevel="1" %s>
         <projectFiles>
           <directory name="."/>
           <ignoreFiles> <directory name="../../vendor"/> </ignoreFiles>
diff --git a/tests/acceptance/TestCase.feature b/tests/acceptance/TestCase.feature
index dd36870..1f546a1 100644
--- a/tests/acceptance/TestCase.feature
+++ b/tests/acceptance/TestCase.feature
@@ -7,7 +7,7 @@ Feature: TestCase
     Given I have the following config
       """
       <?xml version="1.0"?>
-      <psalm totallyTyped="true" %s>
+      <psalm errorLevel="1" %s>
         <projectFiles>
           <directory name="."/>
           <ignoreFiles> <directory name="../../vendor"/> </ignoreFiles>
@@ -693,8 +693,8 @@ Feature: TestCase
       """
     When I run Psalm
     Then I see these errors
-      | Type              | Message                                                                                                                                                             |
-      | InvalidArgument   | Argument 1 of NS\MyTestCase::testSomething has no default value, but possibly undefined int provided by NS\MyTestCase::provide():(iterable<string, array{0?: int}>) |
+      | Type            | Message                                                                                                                                                        |
+      | InvalidArgument | Argument 1 of NS\MyTestCase::testSomething is not optional, but possibly undefined int provided by NS\MyTestCase::provide():(iterable<string, array{0?: int}>) |
     And I see no other errors
 
   Scenario: Stateful grandchild test case with setUp produces no MissingConstructor