diff --git a/frontend/document/pdfdocument.lua b/frontend/document/pdfdocument.lua
index 2849c1a6c..35e13f01c 100644
--- a/frontend/document/pdfdocument.lua
+++ b/frontend/document/pdfdocument.lua
@@ -369,6 +369,7 @@ function PdfDocument:register(registry)
     registry:addProvider("fb2", "application/fb2", self, 80)
     registry:addProvider("htm", "text/html", self, 90)
     registry:addProvider("html", "text/html", self, 90)
+    registry:addProvider("mobi", "application/x-mobipocket-ebook", self, 80)
     registry:addProvider("pdf", "application/pdf", self, 100)
     registry:addProvider("pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation", self, 80)
     registry:addProvider("tar", "application/x-tar", self, 10)