diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index c46f5be545a..3ceb77c8e5a 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -198,7 +198,9 @@ spaces on them when running on Win32/cygwin.  We strongly recommend running
 LLVM and the C frontend out of a top-level directory without spaces (e.g., 
 <tt>/cygdrive/c/llvm</tt>).  Also, make sure to install <b>all</b> of the 
 cygwin packages.  By default, many important tools are not installed that 
-are needed by the LLVM build process or test suite (e.g., /bin/time).</p>
+are needed by the LLVM build process or test suite (e.g., /bin/time).  Finally,
+please make sure that there are no directories with spaces in them in your
+PATH environment variable.</p>
 
 </div>