diff --git a/static/test_interface3.html b/static/test_interface3.html
index 9e40d5c..a160604 100644
--- a/static/test_interface3.html
+++ b/static/test_interface3.html
@@ -175,7 +175,7 @@ async function submitTest() {
         $('hairlineType').style.display = 'inline-block';
       }
 
-      const grownSrc = d.hair_growth_image_url || d.hair_growth_image_base64;
+      const grownSrc = d.hair_growth_image_url || (d.hair_growth_image_base64 ? 'data:image/jpeg;base64,' + d.hair_growth_image_base64 : '');
       if (grownSrc) {
         $('blendTop').src = grownSrc;
         $('blendTop').style.display = 'block';