diff --git a/composer.json b/composer.json
index 5b8dbf7..818ec1f 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": "^7.1",
+        "php": "^7.1 || ^8.0",
         "myclabs/php-enum": "^1.7",
         "ext-iconv": "*"
     },
diff --git a/src/Readers/Pairtwo6.php b/src/Readers/Pairtwo6.php
index 9a94d2b..d598f44 100644
--- a/src/Readers/Pairtwo6.php
+++ b/src/Readers/Pairtwo6.php
@@ -461,8 +461,8 @@ class Pairtwo6 implements ReaderInterface
             $offset += $length;
 
             $length = 1;
-            $player->Category =
-                $this->Tournament->Categories[ $this->readData('Int', substr($swscontents, $offset, $length)) - 1 ];
+            $categoryindex = $this->readData('Int', substr($swscontents, $offset, $length));
+            $player->Category = $categoryindex != 0 ? $this->Tournament->Categories[ $categoryindex ] : NULL;
             $offset += $length;
 
             $length = 1;