diff --git a/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt b/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt
index a9f0f10..c8b4bb8 100644
--- a/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/series/CreatorAdminContentSeriesService.kt
@@ -67,7 +67,7 @@ class CreatorAdminContentSeriesService(
                 seriesKeyword
             }
 
-        series.keywordList.addAll(keywords)
+        series.keywordList.addAll(keywords.toSet())
 
         val metadata = ObjectMetadata()
         metadata.contentLength = coverImage.size