diff --git a/src/Standards/Squiz/Tests/PHP/NonExecutableCodeUnitTest.1.inc b/src/Standards/Squiz/Tests/PHP/NonExecutableCodeUnitTest.1.inc
index 2efcc78e57..4b1d1ca650 100644
--- a/src/Standards/Squiz/Tests/PHP/NonExecutableCodeUnitTest.1.inc
+++ b/src/Standards/Squiz/Tests/PHP/NonExecutableCodeUnitTest.1.inc
@@ -418,6 +418,3 @@ $closure = function ()
     echo 'foo';
     return; // This return should be flagged as not required.
 };
-
-// Intentional syntax error.
-return array_map(
diff --git a/src/Standards/Squiz/Tests/PHP/NonExecutableCodeUnitTest.4.inc b/src/Standards/Squiz/Tests/PHP/NonExecutableCodeUnitTest.4.inc
new file mode 100644
index 0000000000..189466b4dd
--- /dev/null
+++ b/src/Standards/Squiz/Tests/PHP/NonExecutableCodeUnitTest.4.inc
@@ -0,0 +1,6 @@
+<?php
+
+// Intentional syntax error. See issue #2990.
+// Testing that no "Undefined array key "parenthesis_closer"" notice is thrown.
+// This must be the only test in this file.
+return array_map(