--- runtime/doc/eval.txt
+++ runtime/doc/eval.txt
@@ -4880,13 +4880,13 @@
 		If you want a list to remain unmodified make a copy first: >
 			:let revlist = reverse(copy(mylist))
 
-							*rmdir()*
-rmdir({dname} [, {flags}])
+rmdir({dname} [, {flags}])				*rmdir()*
 		Remove a directory {dname}.  Return 0 for success, otherwise
 		return non-zero value.  If the directory contains any files or
 		sub-directories, this function will fail, when no {flags}
 		specified.  When "r" is given as {flags}, it remove the
 		directory and its contents recursively.
+		This function is not available in the |sandbox|.
 
 round({expr})							*round()*
 		Round off {expr} to the nearest integral value and return it
