diff --git a/pdf/README.md b/pdf/README.md
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@@ -58,7 +58,7 @@
 | 2018 | [The Death of Transit and the Future Internet](2018-The_Death_of_Transit_and_the_Future_Internet.pdf) |
 | 2019 | [A First Look at References from the Dark to Surface Web World](2019-A_First_Look_at_References_from_the_Dark_to_Surface_Web_World.pdf) |
 | 2019 | [Analyzing Chinas Blocking of Unpublished Tor Bridges](2019-Analyzing_Chinas_Blocking_of_Unpublished_Tor_Bridges.pdf) |
-| 2019 | [Something Dark INVESTIGATING IN THE DARK WEB](2019-Something_Dark_INVESTIGATING_IN_THE_DARK_WEB) |
+| 2019 | [Something Dark INVESTIGATING IN THE DARK WEB](2019-Something_Dark_INVESTIGATING_IN_THE_DARK_WEB.pdf) |
 | 2019 | [The Great Cloudwall](2019-The_Great_Cloudwall.pdf) |
 | 2019 | [Thirteen Years of Tor Attacks](2019-Thirteen_Years_of_Tor_Attacks.pdf) |
 | 2019 | [Tor Censorship Arms Race](2019-Tor_Censorship_Arms_Race.pdf) |