diff --git a/gallery_dl/extractor/poipiku.py b/gallery_dl/extractor/poipiku.py
index 623908c7..bd222835 100644
--- a/gallery_dl/extractor/poipiku.py
+++ b/gallery_dl/extractor/poipiku.py
@@ -24,6 +24,8 @@ class PoipikuExtractor(Extractor):
     request_interval = (0.5, 1.5)
 
     def _init(self):
+        self.cookies.set(
+            "LANG", "en", domain="poipiku.com")
         self.cookies.set(
             "POIPIKU_CONTENTS_VIEW_MODE", "1", domain="poipiku.com")