diff --git a/materials.json b/materials.json
index d3596b0..dbba613 100644
--- a/materials.json
+++ b/materials.json
@@ -3,7 +3,7 @@
     {
       "name": "Vinette",
       "categories": ["photo", "fx", "vintage"],
-      "preview": "/thumbnails/vinette.png",
+      "preview": "./thumbnails/vinette.png",
       "snippet": "snippets/vinette.txt",
       "description": "Adds a subtle darkened border around the edges of the image for a vintage effect."
     }