Index: doc/make.texi
===================================================================
RCS file: /sources/make/make/doc/make.texi,v
retrieving revision 1.50
diff -u -r1.50 make.texi
--- doc/make.texi	15 Aug 2007 13:53:54 -0000	1.50
+++ doc/make.texi	17 Sep 2007 11:04:54 -0000
@@ -1098,7 +1098,8 @@
 a tab is not allowed.  (If the line begins with a tab, it will be
 considered a command line.)  Whitespace is required between
 @code{include} and the file names, and between file names; extra
-whitespace is ignored there and at the end of the directive.  A
+whitespace is ignored there and at the end of the directive.
+However, whitespace in filenames is not allowed.  A
 comment starting with @samp{#} is allowed at the end of the line.  If
 the file names contain any variable or function references, they are
 expanded.  @xref{Using Variables, ,How to Use Variables}.
