From 0bccaa9ead3c398da96fe433a95b9a7b557692f6 Mon Sep 17 00:00:00 2001
From: "James E. King III" <jking@apache.org>
Date: Sun, 13 May 2018 11:17:57 -0400
Subject: [PATCH] issue-76: fix syntax error in jamfile (#77)

---
 tools/check/predef.jam | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/check/predef.jam b/tools/check/predef.jam
index 6355ea7..c037fb4 100644
--- a/tools/check/predef.jam
+++ b/tools/check/predef.jam
@@ -43,7 +43,7 @@ rule check ( expressions + : language ? : true-properties * : false-properties *
         else
         {
             # Create the check run if we don't have one yet.
-            local key = [ MD5 $(language)::$(expression) ] ;
+            local key = [ MD5 "$(language)::$(expression)" ] ;
             if ! ( $(key) in $(_checks_) )
             {
                 _checks_ += $(key) ;