diff --git a/web/src/components/player/PreviewThumbnailPlayer.tsx b/web/src/components/player/PreviewThumbnailPlayer.tsx
index 9a6e91e91..d0f84899b 100644
--- a/web/src/components/player/PreviewThumbnailPlayer.tsx
+++ b/web/src/components/player/PreviewThumbnailPlayer.tsx
@@ -237,7 +237,7 @@ export default function PreviewThumbnailPlayer({
 type PreviewContentProps = {
   review: ReviewSegment;
   relevantPreview: Preview | undefined;
-  setReviewed?: () => void;
+  setReviewed: () => void;
   setIgnoreClick: (ignore: boolean) => void;
   isPlayingBack: (ended: boolean) => void;
   onTimeUpdate?: (time: number | undefined) => void;
@@ -280,7 +280,7 @@ const PREVIEW_PADDING = 16;
 type VideoPreviewProps = {
   review: ReviewSegment;
   relevantPreview: Preview;
-  setReviewed?: () => void;
+  setReviewed: () => void;
   setIgnoreClick: (ignore: boolean) => void;
   isPlayingBack: (ended: boolean) => void;
   onTimeUpdate?: (time: number | undefined) => void;
@@ -366,6 +366,10 @@ function VideoPreview({
     setLastPercent(playerPercent);
 
     if (playerPercent > 100) {
+      if (!review.has_been_reviewed) {
+        setReviewed();
+      }
+
       if (isMobile) {
         isPlayingBack(false);
 
@@ -483,7 +487,7 @@ function VideoPreview({
 const MIN_LOAD_TIMEOUT_MS = 200;
 type InProgressPreviewProps = {
   review: ReviewSegment;
-  setReviewed?: (reviewId: string) => void;
+  setReviewed: (reviewId: string) => void;
   setIgnoreClick: (ignore: boolean) => void;
   isPlayingBack: (ended: boolean) => void;
   onTimeUpdate?: (time: number | undefined) => void;
@@ -518,6 +522,10 @@ function InProgressPreview({
     }
 
     if (key == previewFrames.length - 1) {
+      if (!review.has_been_reviewed) {
+        setReviewed(review.id);
+      }
+
       if (isMobile) {
         isPlayingBack(false);