diff --git a/now-playing/script.js b/now-playing/script.js
index 39a226a..115262a 100644
--- a/now-playing/script.js
+++ b/now-playing/script.js
@@ -348,7 +348,7 @@ async function UpdatePlayerState(data) {
         const timelineProps = targetSession.timeline_properties;
 
         // Calcualte an accent color
-        const accentColorPalette = await GetAccentPalette(mediaProps.Thumbnail);
+        const accentColorPalette = await GetAccentPalette(mediaProps.Thumbnail ?? './images/placeholder.png');
 
         // 1. Check if playback status has changed and update visibility accordingly
         if (playbackInfo.PlaybackStatus !== CurrentPlaybackStatus) {
diff --git a/now-playing/themes/standard/script.js b/now-playing/themes/standard/script.js
index 94d0bd7..a64e000 100644
--- a/now-playing/themes/standard/script.js
+++ b/now-playing/themes/standard/script.js
@@ -78,7 +78,7 @@ async function ChangeTrack(mediaProps, accentColorPalette) {
         }
 
         // Extract the image source string (use fallback if Windows has no art)
-        const newArtUrl = mediaProps.Thumbnail;
+        const newArtUrl = mediaProps.Thumbnail ?? './images/placeholder.png';
 
         // Set the image
         switch (themeVariant) {