diff --git a/index.php b/index.php
index a5b3ccecfe89edcc574f84084aa7920dadd532b3..73ca5e8e9faa4bea15a5a03c6905038175b1cf3e 100644
--- a/index.php
+++ b/index.php
@@ -16,7 +16,7 @@
         $style = 'background-color: #FFCCCB';
         $svg = "<svg xmlns='http://www.w3.org/2000/svg' width='100' height='50'><text x='10' y='30'>$text</text></svg>";
         $svgData = base64_encode($svg);
-        $src = 'data:image/svg+xml;base64,$svgData';
+        $src = "data:image/svg+xml;base64,$svgData";
         $imgTag = "<img class='front-face' src='$src' alt='$text' style='$style'/>";
         echo $imgTag;
       ?>