Index: boost/tuple/tuple_comparison.hpp
===================================================================
--- boost/tuple/tuple_comparison.hpp	(revision 51377)
+++ boost/tuple/tuple_comparison.hpp	(working copy)
@@ -69,8 +69,8 @@
 template<class T1, class T2>
 inline bool lt(const T1& lhs, const T2& rhs) {
   return lhs.get_head() < rhs.get_head()  ||
-            !(rhs.get_head() < lhs.get_head()) &&
-            lt(lhs.get_tail(), rhs.get_tail());
+          ( !(rhs.get_head() < lhs.get_head()) &&
+            lt(lhs.get_tail(), rhs.get_tail()));
 }
 template<>
 inline bool lt<null_type,null_type>(const null_type&, const null_type&) { return false; }
@@ -78,8 +78,8 @@
 template<class T1, class T2>
 inline bool gt(const T1& lhs, const T2& rhs) {
   return lhs.get_head() > rhs.get_head()  ||
-            !(rhs.get_head() > lhs.get_head()) &&
-            gt(lhs.get_tail(), rhs.get_tail());
+         ( !(rhs.get_head() > lhs.get_head()) &&
+            gt(lhs.get_tail(), rhs.get_tail()));
 }
 template<>
 inline bool gt<null_type,null_type>(const null_type&, const null_type&) { return false; }