diff --git a/Troubleshooting.md b/Troubleshooting.md
index 600fada..482fadb 100644
--- a/Troubleshooting.md
+++ b/Troubleshooting.md
@@ -8,6 +8,10 @@ Use the following command to set default applications for mimetypes when using `
     e.g.
     xdg-mime default sxiv.desktop image/jpeg image/png
 
+## Selection marks gone
+
+This happens on leaving and re-entering or refreshing a directory. More details on [selection](https://github.com/jarun/nnn/wiki/concepts#selection).
+
 ## Tmux configuration
 
 #### Keyboard