diff --git a/Jamfile b/Jamfile
index 19071a6cab..60c257e4d9 100644
--- a/Jamfile
+++ b/Jamfile
@@ -19,7 +19,7 @@ Options:
     --layout=<layout>       Determines what kind of build layout to use. This
                             allows one to control the naming of the resulting
                             libraries, and the locations of the installed
-                            files. Default is "versioned". Possible values:
+                            files. Default is 'versioned'. Possible values:
                             
                                 versioned - Uses the Boost standard names
                                 which include version number for Boost the