diff --git a/.travis.yml b/.travis.yml
index a63cdec1..ae5f5a09 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,10 +10,8 @@ php:
 
 matrix:
   include:
-    - php: 7.0
+    - php: 7.1
       env: COVERAGE=1
-  allow_failures:
-    - php: 7.2
 
 cache:
   directories:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ef9d064..915c6081 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+- Support for PHP 7.2
 - Support cell comments in HTML writer and reader - [#308](https://github.com/PHPOffice/PhpSpreadsheet/issues/308)
 - Option to stop at a conditional styling, if it matches (only XLSX format) - [#292](https://github.com/PHPOffice/PhpSpreadsheet/pull/292)
 - Support for line width for data series when rendering Xlsx - [#329](https://github.com/PHPOffice/PhpSpreadsheet/pull/329)
diff --git a/src/PhpSpreadsheet/Calculation/Calculation.php b/src/PhpSpreadsheet/Calculation/Calculation.php
index 721acc33..80d5b288 100644
--- a/src/PhpSpreadsheet/Calculation/Calculation.php
+++ b/src/PhpSpreadsheet/Calculation/Calculation.php
@@ -2798,11 +2798,12 @@ class Calculation
         $matrixRows = count($matrix);
         $matrixColumns = 0;
         foreach ($matrix as $rowKey => $rowValue) {
-            $matrixColumns = max(count($rowValue), $matrixColumns);
             if (!is_array($rowValue)) {
                 $matrix[$rowKey] = [$rowValue];
+                $matrixColumns = max(1, $matrixColumns);
             } else {
                 $matrix[$rowKey] = array_values($rowValue);
+                $matrixColumns = max(count($rowValue), $matrixColumns);
             }
         }
         $matrix = array_values($matrix);
diff --git a/tests/PhpSpreadsheetTests/Helper/SampleTest.php b/tests/PhpSpreadsheetTests/Helper/SampleTest.php
index 2f87d058..be1f50c6 100644
--- a/tests/PhpSpreadsheetTests/Helper/SampleTest.php
+++ b/tests/PhpSpreadsheetTests/Helper/SampleTest.php
@@ -30,6 +30,11 @@ class SampleTest extends TestCase
             'Chart/32_Chart_read_write_HTML.php', // idem
         ];
 
+        // TCPDF does not support PHP 7.2
+        if (version_compare(PHP_VERSION, '7.2.0') >= 0) {
+            $skipped[] = 'Pdf/21_Pdf_TCPDF.php';
+        }
+
         // Unfortunately some tests are too long be ran with code-coverage
         // analysis on Travis, so we need to exclude them
         global $argv;