diff --git a/custom.js b/custom.js
index b2baf03..e084e1e 100644
--- a/custom.js
+++ b/custom.js
@@ -61,7 +61,12 @@ const svgObsidianFix = () => {
       canvas.height = image.height;
       const ctx = canvas.getContext("2d");
       ctx.drawImage(image, 0, 0);
-      const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
+      const imageData = ctx.getImageData(
+        0,
+        0,
+        Math.max(1, canvas.width),
+        Math.max(1, canvas.height)
+      );
       const pixelData = imageData.data;
 
       const colors = [];