diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentService.kt
index 11ae487..8df6b01 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentService.kt
@@ -246,7 +246,7 @@ class AudioContentService(
             // 콘텐츠 파일 업로드
             metadata = ObjectMetadata()
             metadata.contentLength = contentFile.size
-            metadata.addUserMetadata("generate_preview", "true")
+            metadata.addUserMetadata("generate_preview", request.isGeneratePreview.toString())
 
             if (request.previewStartTime != null && request.previewEndTime != null) {
                 metadata.addUserMetadata("preview_start_time", request.previewStartTime)