diff --git a/src/functions.php b/src/functions.php
index 626833b5..93c18edf 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -33,7 +33,7 @@ function html(string $tagName, array $attributes, string $content = null): strin
     }
 
     if ($tagName === 'img') {
-        return "${html} />";
+        return "$html />";
     }
 
     return "{$html}>{$content}</{$tagName}>";