diff --git a/doc/speed-manual.cfg b/doc/speed-manual.cfg
index 82a9037..2047b67 100644
--- a/doc/speed-manual.cfg
+++ b/doc/speed-manual.cfg
@@ -10,5 +10,12 @@
     }
   }
 }
+
+% https://tex.stackexchange.com/questions/698669
+\makeatletter
+  \def\Hy@PageAnchorSlidesPlain{}%
+  \def\Hy@PageAnchorSlide{}%
+\makeatother
+
 \begin{document}
-\EndPreamble
\ No newline at end of file
+\EndPreamble