diff --git a/bin/openfile b/bin/openfile
index a3163f3..e530b3e 100755
--- a/bin/openfile
+++ b/bin/openfile
@@ -1,9 +1,8 @@
 #!/bin/sh
 # Helps open a file with xdg-open from mutt in a external program without weird side effects.
 [ $(uname) = "Darwin" ] && opener="open" || opener="setsid xdg-open"
-base=$(basename "$1")
-ext="${base##*.}"
-file=$(mktemp -u --suffix=".$ext")
+mkdir -p "/tmp/$USER-mutt-tmp"
+file="/tmp/$USER-mutt-tmp/$(basename "$1")"
 rm -f "$file"
 cp "$1" "$file"
 $opener "$file" >/dev/null 2>&1 &