diff --git a/InterstellarFuelSwitch-Core/InterstellarFuelSwitch-Core-1.15.ckan b/InterstellarFuelSwitch-Core/InterstellarFuelSwitch-Core-1.15.ckan
index 3e137d8274..e75ed91b0e 100644
--- a/InterstellarFuelSwitch-Core/InterstellarFuelSwitch-Core-1.15.ckan
+++ b/InterstellarFuelSwitch-Core/InterstellarFuelSwitch-Core-1.15.ckan
@@ -21,5 +21,10 @@
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+    },
+    "download_content_type": "application/zip",
     "x_generated_by": "netkan"
 }