diff --git a/tests/system/CommonHelperTest.php b/tests/system/CommonHelperTest.php
index 8a41f7972a9e..04e6c9eebb1f 100644
--- a/tests/system/CommonHelperTest.php
+++ b/tests/system/CommonHelperTest.php
@@ -148,7 +148,7 @@ function foo_bar_baz(): string
             }
         }
 
-        $this->assertSame($this->dummyHelpers[0], foo_bar_baz());
+        $this->assertSame($this->dummyHelpers[0], foo_bar_baz()); // @phpstan-ignore-line function.notFound
     }
 
     public function testNamespacedHelperNotFound(): void
diff --git a/utils/phpstan-baseline/function.notFound.neon b/utils/phpstan-baseline/function.notFound.neon
deleted file mode 100644
index 8cc185754011..000000000000
--- a/utils/phpstan-baseline/function.notFound.neon
+++ /dev/null
@@ -1,8 +0,0 @@
-# total 1 error
-
-parameters:
-    ignoreErrors:
-        -
-            message: '#^Function foo_bar_baz not found\.$#'
-            count: 1
-            path: ../../tests/system/CommonHelperTest.php
diff --git a/utils/phpstan-baseline/loader.neon b/utils/phpstan-baseline/loader.neon
index 789d5ef7e1ef..b81067460d0e 100644
--- a/utils/phpstan-baseline/loader.neon
+++ b/utils/phpstan-baseline/loader.neon
@@ -18,7 +18,6 @@ includes:
     - expr.resultUnused.neon
     - function.alreadyNarrowedType.neon
     - function.inner.neon
-    - function.notFound.neon
     - generator.returnType.neon
     - generator.valueType.neon
     - greaterOrEqual.invalid.neon