diff --git a/Wiki/WikiMapiyaGhyb.zmp/params.txt b/Wiki/WikiMapiyaGhyb.zmp/params.txt
index cd4d4d025..d7de544ca 100644
--- a/Wiki/WikiMapiyaGhyb.zmp/params.txt
+++ b/Wiki/WikiMapiyaGhyb.zmp/params.txt
@@ -15,3 +15,4 @@ projection=1
 sradiusa=6378137
 sradiusb=6356752
 MimeTypeSubst = "text/plain=image/png"
+DetectContentType=1
diff --git a/Yandex/YaSat.zmp/params.txt b/Yandex/YaSat.zmp/params.txt
index dd0150850..e77ad46d5 100644
--- a/Yandex/YaSat.zmp/params.txt
+++ b/Yandex/YaSat.zmp/params.txt
@@ -16,3 +16,4 @@ NameInCache=yasat
 Ext=.jpg
 DefHotKey=89
 ContentType=image/jpeg
+DetectContentType=1