diff --git a/convert.sh b/convert.sh
index 04561dc..5c5c606 100644
--- a/convert.sh
+++ b/convert.sh
@@ -2,6 +2,6 @@
 
 for FILE in output/*
 do
-  ebook-polish -fpuH "${FILE}" "${FILE}"
+  ebook-polish -fpuiH "${FILE}" "${FILE}"
   ebook-convert "${FILE}" "${FILE%.*}.pdf"
 done