diff --git a/src/PhpSpreadsheet/Reader/Xlsx/Styles.php b/src/PhpSpreadsheet/Reader/Xlsx/Styles.php
index 2968a3fe..80c32065 100644
--- a/src/PhpSpreadsheet/Reader/Xlsx/Styles.php
+++ b/src/PhpSpreadsheet/Reader/Xlsx/Styles.php
@@ -42,9 +42,12 @@ class Styles extends BaseParserClass
 
     public static function readFontStyle(Font $fontStyle, SimpleXMLElement $fontStyleXml): void
     {
-        $fontStyle->setName((string) $fontStyleXml->name['val']);
-        $fontStyle->setSize((float) $fontStyleXml->sz['val']);
-
+        if (isset($fontStyleXml->name, $fontStyleXml->name['val'])) {
+            $fontStyle->setName((string) $fontStyleXml->name['val']);
+        }
+        if (isset($fontStyleXml->sz, $fontStyleXml->sz['val'])) {
+            $fontStyle->setSize((float) $fontStyleXml->sz['val']);
+        }
         if (isset($fontStyleXml->b)) {
             $fontStyle->setBold(!isset($fontStyleXml->b['val']) || self::boolean((string) $fontStyleXml->b['val']));
         }
@@ -68,8 +71,7 @@ class Styles extends BaseParserClass
             $verticalAlign = strtolower((string) $fontStyleXml->vertAlign['val']);
             if ($verticalAlign === 'superscript') {
                 $fontStyle->setSuperscript(true);
-            }
-            if ($verticalAlign === 'subscript') {
+            } elseif ($verticalAlign === 'subscript') {
                 $fontStyle->setSubscript(true);
             }
         }
diff --git a/tests/PhpSpreadsheetTests/Reader/Xlsx/DefaultFillTest.php b/tests/PhpSpreadsheetTests/Reader/Xlsx/DefaultFillTest.php
index ccdad067..dc61b953 100644
--- a/tests/PhpSpreadsheetTests/Reader/Xlsx/DefaultFillTest.php
+++ b/tests/PhpSpreadsheetTests/Reader/Xlsx/DefaultFillTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace PhpOffice\PhpSpreadsheetTests\Reader;
+namespace PhpOffice\PhpSpreadsheetTests\Reader\Xlsx;
 
 use PhpOffice\PhpSpreadsheet\IOFactory;
 use PHPUnit\Framework\TestCase;
diff --git a/tests/PhpSpreadsheetTests/Reader/Xlsx/DefaultFontTest.php b/tests/PhpSpreadsheetTests/Reader/Xlsx/DefaultFontTest.php
new file mode 100644
index 00000000..a4e94804
--- /dev/null
+++ b/tests/PhpSpreadsheetTests/Reader/Xlsx/DefaultFontTest.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Reader\Xlsx;
+
+use PhpOffice\PhpSpreadsheet\IOFactory;
+use PHPUnit\Framework\TestCase;
+
+class DefaultFontTest extends TestCase
+{
+    public function testDefaultConditionalFont(): void
+    {
+        // default fill pattern for a conditional style where the filltype is not defined
+        $filename = 'tests/data/Reader/XLSX/pr2050cf-fill.xlsx';
+        $reader = IOFactory::createReader('Xlsx');
+        $spreadsheet = $reader->load($filename);
+
+        $style = $spreadsheet->getActiveSheet()->getConditionalStyles('A1')[0]->getStyle();
+        self::assertSame('9C0006', $style->getFont()->getColor()->getRGB());
+        self::assertNull($style->getFont()->getName());
+        self::assertNull($style->getFont()->getSize());
+    }
+}