diff --git a/WordPress/Tests/WhiteSpace/OperatorSpacingUnitTest.inc b/WordPress/Tests/WhiteSpace/OperatorSpacingUnitTest.inc
index e58abf8cd0..eed51cbd42 100644
--- a/WordPress/Tests/WhiteSpace/OperatorSpacingUnitTest.inc
+++ b/WordPress/Tests/WhiteSpace/OperatorSpacingUnitTest.inc
@@ -75,3 +75,7 @@ function fooBar( TypeA&namespace\TypeB $param ) : \TypeC&Partially\Qualified {}
 class Foo {
 	public readonly int|string $prop;
 }
+
+// Safeguard that declare statements are ignored.
+// Ref: https://github.com/PHPCSStandards/PHP_CodeSniffer/pull/289
+declare(ticks=1);
diff --git a/WordPress/Tests/WhiteSpace/OperatorSpacingUnitTest.inc.fixed b/WordPress/Tests/WhiteSpace/OperatorSpacingUnitTest.inc.fixed
index 43ab5ae914..ef8fa828b2 100644
--- a/WordPress/Tests/WhiteSpace/OperatorSpacingUnitTest.inc.fixed
+++ b/WordPress/Tests/WhiteSpace/OperatorSpacingUnitTest.inc.fixed
@@ -75,3 +75,7 @@ function fooBar( TypeA&namespace\TypeB $param ) : \TypeC&Partially\Qualified {}
 class Foo {
 	public readonly int|string $prop;
 }
+
+// Safeguard that declare statements are ignored.
+// Ref: https://github.com/PHPCSStandards/PHP_CodeSniffer/pull/289
+declare(ticks=1);