diff --git a/frontend/src/app/util/dom.cljs b/frontend/src/app/util/dom.cljs
index 1357cf2a1..499881ecf 100644
--- a/frontend/src/app/util/dom.cljs
+++ b/frontend/src/app/util/dom.cljs
@@ -412,6 +412,7 @@
     "image/webp"         "webp"
     "application/zip"    "zip"
     "application/penpot" "penpot"
+    "application/pdf"    "pdf"
     nil))
 
 (defn set-attribute [^js node ^string attr value]