diff --git a/web/src/pages/harmonie/SlideShow.tsx b/web/src/pages/harmonie/SlideShow.tsx
index ce85bf5..5279375 100644
--- a/web/src/pages/harmonie/SlideShow.tsx
+++ b/web/src/pages/harmonie/SlideShow.tsx
@@ -60,14 +60,14 @@ export const SlideShow: Component<{
     let playingTimeout = 0
     function play() {
         if (getIsPlaying()) {
-            clearTimeout(playingTimeout)
+            window.clearTimeout(playingTimeout)
             setIsPlaying(false)
             return;
         }
 
         function loop() {
             next()
-            playingTimeout = setTimeout(loop, 300)
+            playingTimeout = window.setTimeout(loop, 300)
         }
         setIsPlaying(true)
         loop()
@@ -101,4 +101,4 @@ export const SlideShow: Component<{
 
 function format(date: string) {
     return date.slice(11, 13) // 2025-02-23T1500Z -> 15
-}
\ No newline at end of file
+}