diff --git a/src/claviska/SimpleImage.php b/src/claviska/SimpleImage.php
index 5ef9efe..5032189 100644
--- a/src/claviska/SimpleImage.php
+++ b/src/claviska/SimpleImage.php
@@ -1376,7 +1376,7 @@ public function textBox(string $text, array $options): static
     /**
      * Receives a text and breaks into LINES.
      */
-    private function textSeparateLines(string $text, string $fontFile, int $fontSize, int $maxWidth): array
+    private function textSeparateLines(string $text, string $fontFile, float $fontSize, int $maxWidth): array
     {
         $lines = [];
         $words = self::textSeparateWords($text);