diff --git a/assets/js/player.js b/assets/js/player.js
index 6711cc70..bfb9decb 100644
--- a/assets/js/player.js
+++ b/assets/js/player.js
@@ -766,7 +766,7 @@ if (location.pathname.startsWith('/embed/')) {
 
 // Channel watermark
 if (video_data.watermark) {
-    const watermark_html = `<a href="/channel/${video_data.ucid}"><img class="channel-watermark" src="${video_data.watermark.thumbnailURL}"/></a>`;
+    const watermark_html = `<a href="/channel/${video_data.ucid}"><img class="channel-watermark" src="${video_data.watermark.thumbnailUrl}"/></a>`;
     
     player.overlay({
         overlays: [
diff --git a/src/invidious/videos/parser.cr b/src/invidious/videos/parser.cr
index 3bb838b1..e2d45c2c 100644
--- a/src/invidious/videos/parser.cr
+++ b/src/invidious/videos/parser.cr
@@ -384,7 +384,7 @@ def parse_video_info(video_id : String, player_response : Hash(String, JSON::Any
     watermark_data = {
       "startTimeMs"  => watermark["startTimeMs"],
       "endTimeMs"    => watermark["endTimeMs"],
-      "thumbnailURL" => JSON::Any.new(URI.parse(watermark["watermark"]["thumbnails"][0]["url"].as_s).request_target),
+      "thumbnailUrl" => JSON::Any.new(URI.parse(watermark["watermark"]["thumbnails"][0]["url"].as_s).request_target),
     }
   else
     watermark_data = {} of String => JSON::Any