diff --git a/app/src/Lib/Util/ArrayUtil.php b/app/src/Lib/Util/ArrayUtil.php
new file mode 100644
index 000000000..fde2cc5fc
--- /dev/null
+++ b/app/src/Lib/Util/ArrayUtil.php
@@ -0,0 +1,44 @@
+<?php
+/**
+ * COmanage Match Array Utility Functions 
+ *
+ * Portions licensed to the University Corporation for Advanced Internet
+ * Development, Inc. ("UCAID") under one or more contributor license agreements.
+ * See the NOTICE file distributed with this work for additional information
+ * regarding copyright ownership.
+ *
+ * UCAID licenses this file to you under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * @link          https://www.internet2.edu/comanage COmanage Project
+ * @package       match
+ * @since         COmanage Match v1.0.0
+ * @license       Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
+ */
+
+declare(strict_types = 1);
+
+namespace App\Lib\Util;
+
+class ArrayUtil {
+  /**
+   * Case-insensitive array_unique function
+   *
+   * @since  COmanage Match v1.0.0
+   * @param  array     $array one-dimensional array
+   * @return array     array with values converted to lower-case
+   */
+  public static function array_iunique($array) {
+    $lowercaseArray = array_map('strtolower', $array);
+    return array_intersect_key($array, array_unique($lowercaseArray));
+  }
+}  
\ No newline at end of file
diff --git a/app/templates/Matchgrids/reconcile.php b/app/templates/Matchgrids/reconcile.php
index b366187f1..c701c5305 100644
--- a/app/templates/Matchgrids/reconcile.php
+++ b/app/templates/Matchgrids/reconcile.php
@@ -27,6 +27,8 @@
 
   declare(strict_types = 1);
 
+  use \App\Lib\Util\ArrayUtil;
+
   // extract the attribute field names into a simple array
   $fieldNames = array();
   foreach ($vv_candidates as $candidate) {
@@ -57,7 +59,7 @@
 
     // Test for content and equality between the row's attribute values and
     // set the third "match?" column to true (1) if non-empty equality found
-    $canAttr[$i][2] = !empty($canAttr[$i][1][0]) && count(array_unique($canAttr[$i][1])) === 1 ? 1 : 0;
+    $canAttr[$i][2] = !empty($canAttr[$i][1][0]) && count(ArrayUtil::array_iunique($canAttr[$i][1])) === 1 ? 1 : 0;
 
   }
 ?>