diff --git a/readme.md b/readme.md
index c7542ed..88ed77b 100644
--- a/readme.md
+++ b/readme.md
@@ -81,9 +81,11 @@ cp -a myMusic myMedia
 **STOP DRAG AND DROP A FILE, OR CTRL + X, CTRL + V A FILE**
 
 ```
-mv readme.txt documents
+mv readme.txt documents/
 ```
 
+**Always** use a trailing slash when moving files, [for this reason](http://unix.stackexchange.com/a/50533).
+
 ## <a id="renamefile"></a>rename a file
 
 **STOP RIGHT CLICK AND RENAME A FILE**