diff --git a/src/Parsing/ParserState.php b/src/Parsing/ParserState.php
index 88f533a8..e90650d5 100644
--- a/src/Parsing/ParserState.php
+++ b/src/Parsing/ParserState.php
@@ -461,14 +461,4 @@ private function strsplit(string $string): array
 
         return $result;
     }
-
-    /**
-     * @return int<0, max>|false
-     */
-    private function strpos(string $haystack, string $needle, int $offset)
-    {
-        return $this->parserSettings->hasMultibyteSupport()
-            ? \mb_strpos($haystack, $needle, $offset, $this->charset)
-            : \strpos($haystack, $needle, $offset);
-    }
 }