diff --git a/Classes/Parser/Lexer.php b/Classes/Parser/Lexer.php
index 059a4dd..dddf2d8 100644
--- a/Classes/Parser/Lexer.php
+++ b/Classes/Parser/Lexer.php
@@ -49,7 +49,7 @@ class Lexer
     public function __construct($string)
     {
         $this->string = $string;
-        $this->currentCharacter = ($string !== '') ? $string{0} : null;
+        $this->currentCharacter = ($string !== '') ? $string[0] : null;
         $this->characterPosition = 0;
     }
 
@@ -250,7 +250,7 @@ public function isEnd(): bool
      */
     public function rewind(): void
     {
-        $this->currentCharacter = $this->string{--$this->characterPosition};
+        $this->currentCharacter = $this->string[--$this->characterPosition];
     }
 
     /**
@@ -277,7 +277,7 @@ public function consume(): ?string
     {
         $c = $this->currentCharacter;
         if ($this->characterPosition < strlen($this->string) - 1) {
-            $this->currentCharacter = $this->string{++$this->characterPosition};
+            $this->currentCharacter = $this->string[++$this->characterPosition];
         } else {
             $this->currentCharacter = null;
         }
diff --git a/Classes/Service/AfxService.php b/Classes/Service/AfxService.php
index b766402..2a1284f 100644
--- a/Classes/Service/AfxService.php
+++ b/Classes/Service/AfxService.php
@@ -216,7 +216,7 @@ protected static function astNodeToFusion($payload, $indentation = '')
             // seperate between attributes (before the first spread), meta attributes
             // spreads and attributes lists between and after spreads
             foreach ($attributes as $attribute) {
-                if ($attribute['type'] === 'prop' && $attribute['payload']['identifier']{0} === '@') {
+                if ($attribute['type'] === 'prop' && $attribute['payload']['identifier'][0] === '@') {
                     $metaAttributes[] = $attribute;
                 } elseif ($attribute['type'] === 'prop' && $spreadIsPresent === false) {
                     $fusionAttributes[] = $attribute;