diff --git a/docs/NIRI.md b/docs/NIRI.md
index b1fc2a5..da2c34a 100644
--- a/docs/NIRI.md
+++ b/docs/NIRI.md
@@ -70,11 +70,12 @@ toggle bind will match:
 
 ```bash
 KEY_RE='(Mod|Super)\+Shift\+M([[:space:]{]|$)'   # the key you want to check
-grep -rnE --include='*.kdl' "$KEY_RE" ~/.config/niri/
-strings "$(command -v niri)" | grep -E "^[[:space:]]*(//[[:space:]]*)?$KEY_RE"
+grep -rniE --include='*.kdl' "$KEY_RE" ~/.config/niri/
+strings "$(command -v niri)" | grep -iE "^[[:space:]]*(//[[:space:]]*)?$KEY_RE"
 ```
 
-The first command searches your config. `~/.config/niri/` holds
+Matching ignores case, because niri also accepts `mod+shift+m`. `strings`
+comes from binutils. The first command searches your config. `~/.config/niri/` holds
 `config.kdl` and the DMS-managed `dms/binds.kdl`, which `config.kdl`
 includes. `--include='*.kdl'` skips the `binds.kdl.pre-*` backups. If you
 include files from elsewhere, add their paths. The second command searches