diff --git a/gallery_dl/extractor/naverwebtoon.py b/gallery_dl/extractor/naverwebtoon.py
index 72ee5b06..18eef4fd 100644
--- a/gallery_dl/extractor/naverwebtoon.py
+++ b/gallery_dl/extractor/naverwebtoon.py
@@ -46,7 +46,7 @@ class NaverwebtoonEpisodeExtractor(NaverwebtoonBase, GalleryExtractor):
             "episode" : self.episode,
             "comic"   : extr('titleName: "', '"'),
             "tags"    : [t.strip() for t in text.extract_iter(
-                extr("tagList: [", "}],"), '"tagName":"', '"')],
+                extr("tagList: [", "],"), '"tagName":"', '"')],
             "title"   : extr('"subtitle":"', '"'),
             "author"  : [a.strip() for a in text.extract_iter(
                 extr('"writers":[', ']'), '"name":"', '"')],
diff --git a/test/results/naverwebtoon.py b/test/results/naverwebtoon.py
index 889e5bce..ba5ca97e 100644
--- a/test/results/naverwebtoon.py
+++ b/test/results/naverwebtoon.py
@@ -61,6 +61,24 @@ __tests__ = (
     "title_id" : "765124",
 },
 
+{
+    "#url"     : "https://comic.naver.com/bestChallenge/detail?titleId=620732&no=334",
+    "#comment" : "empty tags (#5120)",
+    "#category": ("", "naverwebtoon", "episode"),
+    "#class"   : naverwebtoon.NaverwebtoonEpisodeExtractor,
+    "#count"   : 9,
+
+    "artist"  : [],
+    "author"  : ["안트로anthrokim"],
+    "comic"   : "백일몽화원",
+    "count"   : 9,
+    "episode" : "334",
+    "num"     : range(1, 9),
+    "tags"    : [],
+    "title"   : "321화... 성(省)",
+    "title_id": "620732",
+},
+
 {
     "#url"     : "https://comic.naver.com/bestChallenge/detail.nhn?titleId=771467&no=3",
     "#category": ("", "naverwebtoon", "episode"),