diff --git a/vfs/extfs/extfs.ini b/vfs/extfs/extfs.ini
index 047b918b3..a29805d80 100644
--- a/vfs/extfs/extfs.ini
+++ b/vfs/extfs/extfs.ini
@@ -1,4 +1,5 @@
 # Each external VFS type must be registered here if you want to use it
+# Trailing colon means that the filesystem is not tied to a certain file
 
 # Popular pc archivers
 uzip