diff --git a/CHANGELOG.md b/CHANGELOG.md
index f5011905..864479f6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org).
 - Handle Error in Formula Processing Better for Xls [#1267](https://github.com/PHPOffice/PhpSpreadsheet/pull/1267)
 - Handle ConditionalStyle NumberFormat When Reading Xlsx File [#1296](https://github.com/PHPOffice/PhpSpreadsheet/pull/1296)
 - Fix Xlsx Writer's handling of decimal commas [#1282](https://github.com/PHPOffice/PhpSpreadsheet/pull/1282)
+- Fix for issue by removing test code mistakenly left in [#1328](https://github.com/PHPOffice/PhpSpreadsheet/pull/1328)
 
 ## [1.10.1] - 2019-12-02
 
diff --git a/src/PhpSpreadsheet/Calculation/Calculation.php b/src/PhpSpreadsheet/Calculation/Calculation.php
index 1e299f47..cc8a8bd8 100644
--- a/src/PhpSpreadsheet/Calculation/Calculation.php
+++ b/src/PhpSpreadsheet/Calculation/Calculation.php
@@ -4159,13 +4159,6 @@ class Calculation
                 if ($pCellParent) {
                     $pCell->attach($pCellParent);
                 }
-                if (($cellID == 'AC99') || (isset($pCell) && $pCell->getCoordinate() == 'AC99')) {
-                    if (defined('RESOLVING')) {
-                        define('RESOLVING2', true);
-                    } else {
-                        define('RESOLVING', true);
-                    }
-                }
 
                 $functionName = $matches[1];
                 $argCount = $stack->pop();