diff --git a/src/Phan/PhanConvertToSubset.php b/src/Phan/PhanConvertToSubset.php
index 061b447..513a821 100644
--- a/src/Phan/PhanConvertToSubset.php
+++ b/src/Phan/PhanConvertToSubset.php
@@ -12,9 +12,9 @@ final class PhanConvertToSubset extends AbstractConverter
     private const SEVERITY_LEVELS = [
         0 => 'info',
         5 => 'minor',
-        10 => 'critical'
+        10 => 'critical',
     ];
-    
+
     public function convertToSubset(): void
     {
         try {
diff --git a/tests/Phan/PhanConverterTest.php b/tests/Phan/PhanConverterTest.php
index 99bcfd1..b47e707 100644
--- a/tests/Phan/PhanConverterTest.php
+++ b/tests/Phan/PhanConverterTest.php
@@ -40,6 +40,7 @@ public function testItCanConvertPhanJsonToSubset(): void
                 [
                     'description' => '(Phan) UndefError PhanUndeclaredClassConstant Reference to constant class from undeclared class \PhpParser\Node\Stmt\ClassMethod',
                     'fingerprint' => 'e8547906ee21b4f8e8804de980a9d239',
+                    'severity' => 'critical',
                     'location' => [
                         'path' => 'app/Class.php',
                         'lines' => [
diff --git a/tests/Phan/fixtures/output.json b/tests/Phan/fixtures/output.json
index e0fa56a..0eb2334 100644
--- a/tests/Phan/fixtures/output.json
+++ b/tests/Phan/fixtures/output.json
@@ -2,6 +2,7 @@
     {
         "description": "(Phan) UndefError PhanUndeclaredClassConstant Reference to constant class from undeclared class \\PhpParser\\Node\\Stmt\\ClassMethod",
         "fingerprint": "e8547906ee21b4f8e8804de980a9d239",
+        "severity": "critical",
         "location": {
             "path": "app/Class.php",
             "lines": {
@@ -10,4 +11,4 @@
             }
         }
     }
-]
\ No newline at end of file
+]
diff --git a/tests/TestCase.php b/tests/TestCase.php
index bbc923d..2ffac58 100644
--- a/tests/TestCase.php
+++ b/tests/TestCase.php
@@ -34,6 +34,7 @@ public function multipleConvertersProvider(): array
                 'output' => [
                     'description' => '(Phan) UndefError PhanUndeclaredClassConstant Reference to constant class from undeclared class \PhpParser\Node\Stmt\ClassMethod',
                     'fingerprint' => 'e8547906ee21b4f8e8804de980a9d239',
+                    'severity' => 'critical',
                     'location' => [
                         'path' => 'app/Class.php',
                         'lines' => [
diff --git a/tests/fixtures/output.json b/tests/fixtures/output.json
index cd85bec..b9b17e5 100644
--- a/tests/fixtures/output.json
+++ b/tests/fixtures/output.json
@@ -2,6 +2,7 @@
     {
         "description": "(Phan) UndefError PhanUndeclaredClassConstant Reference to constant class from undeclared class \\PhpParser\\Node\\Stmt\\ClassMethod",
         "fingerprint": "e8547906ee21b4f8e8804de980a9d239",
+        "severity": "critical",
         "location": {
             "path": "app/Class.php",
             "lines": {
@@ -61,4 +62,4 @@
             }
         }
     }
-]
\ No newline at end of file
+]