diff --git a/include/boost/algorithm/cxx11/ordered.hpp b/include/boost/algorithm/cxx11/ordered.hpp
index bd8968e..ef2ec41 100644
--- a/include/boost/algorithm/cxx11/ordered.hpp
+++ b/include/boost/algorithm/cxx11/ordered.hpp
@@ -22,6 +22,7 @@
 
 #include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_same.hpp>
+#include <boost/mpl/identity.hpp>
 
 namespace boost { namespace algorithm {
 
@@ -124,6 +125,9 @@ using std::is_sorted;       // Section 25.4.1.5
         return boost::algorithm::is_sorted_until ( boost::begin ( range ), boost::end ( range ));
     }
 
+namespace detail {
+	typedef struct { typedef bool type; } bool_;
+};
 
 /// \fn is_sorted ( const R &range, Pred p )
 /// \return whether or not the entire range R is sorted
@@ -133,7 +137,8 @@ using std::is_sorted;       // Section 25.4.1.5
 /// \param p     A binary predicate that returns true if two elements are ordered.
 ///
     template <typename R, typename Pred>
-    bool is_sorted ( const R &range, Pred p )
+    typename boost::lazy_disable_if_c< boost::is_same<R, Pred>::value, boost::mpl::identity<bool> >::type
+    is_sorted ( const R &range, Pred p )
     {
         return boost::algorithm::is_sorted ( boost::begin ( range ), boost::end ( range ), p );
     }
@@ -144,7 +149,7 @@ using std::is_sorted;       // Section 25.4.1.5
 /// 
 /// \param range The range to be tested.
 ///
-    template <typename R, typename Pred>
+    template <typename R>
     bool is_sorted ( const R &range )
     {
         return boost::algorithm::is_sorted ( boost::begin ( range ), boost::end ( range ));
diff --git a/test/ordered_test.cpp b/test/ordered_test.cpp
index eaf4523..55fd90f 100644
--- a/test/ordered_test.cpp
+++ b/test/ordered_test.cpp
@@ -29,6 +29,54 @@ namespace ba = boost::algorithm;
 
 static void
 test_ordered(void)
+{
+    const int strictlyIncreasingValues[] = { 1, 2, 3, 4, 5 };
+    const int randomValues[] = { 3, 6, 1, 2, 7 };
+    const int constantValues[] = { 1, 2, 2, 2, 5 };
+          int nonConstantArray[] = { 1, 2, 2, 2, 5 };
+    const int inOrderUntilTheEnd [] = { 0, 1, 2, 3, 4, 5, 6, 7, 6 };
+
+//	Begin/end checks
+	BOOST_CHECK (  ba::is_sorted (b_e(strictlyIncreasingValues)));
+	BOOST_CHECK ( !ba::is_sorted (b_e(randomValues)));
+	BOOST_CHECK (  ba::is_sorted (b_e(strictlyIncreasingValues), std::less<int>()));
+	BOOST_CHECK ( !ba::is_sorted (b_e(strictlyIncreasingValues), std::greater<int>()));
+
+//	Range checks
+	BOOST_CHECK (  ba::is_sorted (a_range(strictlyIncreasingValues)));
+	BOOST_CHECK ( !ba::is_sorted (a_range(randomValues)));
+	BOOST_CHECK (  ba::is_sorted (a_range(strictlyIncreasingValues), std::less<int>()));
+	BOOST_CHECK ( !ba::is_sorted (a_range(strictlyIncreasingValues), std::greater<int>()));
+
+    BOOST_CHECK (  ba::is_sorted_until ( b_e(strictlyIncreasingValues))                       ==      a_end(strictlyIncreasingValues));
+    BOOST_CHECK (  ba::is_sorted_until ( b_e(strictlyIncreasingValues),     std::less<int>()) ==      a_end(strictlyIncreasingValues));
+    BOOST_CHECK (  ba::is_sorted_until ( a_range(strictlyIncreasingValues))                   == boost::end(strictlyIncreasingValues));
+    BOOST_CHECK (  ba::is_sorted_until ( a_range(strictlyIncreasingValues), std::less<int>()) == boost::end(strictlyIncreasingValues));
+
+//	Check for const and non-const arrays
+    BOOST_CHECK ( ba::is_sorted_until ( b_e(constantValues),       std::less<int>()) !=      a_end(constantValues));
+    BOOST_CHECK ( ba::is_sorted_until ( a_range(constantValues),   std::less<int>()) != boost::end(constantValues));
+    BOOST_CHECK ( ba::is_sorted_until ( b_e(nonConstantArray),     std::less<int>()) !=      a_end(nonConstantArray));
+    BOOST_CHECK ( ba::is_sorted_until ( a_range(nonConstantArray), std::less<int>()) != boost::end(nonConstantArray));
+
+    BOOST_CHECK ( ba::is_sorted_until ( b_e(randomValues),     std::less<int>()) == &randomValues[2] );
+    BOOST_CHECK ( ba::is_sorted_until ( b_e(randomValues))                       == &randomValues[2] );
+    BOOST_CHECK ( ba::is_sorted_until ( a_range(randomValues), std::less<int>()) == &randomValues[2] );
+    BOOST_CHECK ( ba::is_sorted_until ( a_range(randomValues))                   == &randomValues[2] );
+
+    BOOST_CHECK ( ba::is_sorted_until ( a_range(inOrderUntilTheEnd), std::less<int>()) == &inOrderUntilTheEnd[8] );
+    BOOST_CHECK ( ba::is_sorted_until ( a_range(inOrderUntilTheEnd))                   == &inOrderUntilTheEnd[8] );
+
+//  For zero and one element collections, the comparison predicate should never be called
+    BOOST_CHECK ( ba::is_sorted_until ( a_begin(randomValues), a_begin(randomValues),     std::equal_to<int>()) == a_begin(randomValues));
+    BOOST_CHECK ( ba::is_sorted_until ( a_begin(randomValues), a_begin(randomValues))                           == a_begin(randomValues));
+    BOOST_CHECK ( ba::is_sorted_until ( a_begin(randomValues), a_begin(randomValues) + 1, std::equal_to<int>()) == a_begin(randomValues) + 1);
+    BOOST_CHECK ( ba::is_sorted_until ( a_begin(randomValues), a_begin(randomValues) + 1 )                      == a_begin(randomValues) + 1);
+}
+
+
+static void
+test_increasing_decreasing(void)
 {
     const int strictlyIncreasingValues[] = { 1, 2, 3, 4, 5 };
     const int strictlyDecreasingValues[] = { 9, 8, 7, 6, 5 };
@@ -36,8 +84,6 @@ test_ordered(void)
     const int decreasingValues[] = { 9, 7, 7, 7, 5 };
     const int randomValues[] = { 3, 6, 1, 2, 7 };
     const int constantValues[] = { 7, 7, 7, 7, 7 };
-          int nonConstantArray[] = { 7, 7, 7, 7, 7 };
-    const int inOrderUntilTheEnd [] = { 0, 1, 2, 3, 4, 5, 6, 7, 6 };
 
     // Test a strictly increasing sequence
     BOOST_CHECK (  ba::is_strictly_increasing (b_e(strictlyIncreasingValues)));
@@ -98,30 +144,11 @@ test_ordered(void)
     BOOST_CHECK ( !ba::is_strictly_decreasing (strictlyIncreasingValues, strictlyIncreasingValues+2));
     BOOST_CHECK ( !ba::is_decreasing          (strictlyIncreasingValues, strictlyIncreasingValues+2));
     
-    // Test underlying routines
-    BOOST_CHECK (  ba::is_sorted_until ( b_e(strictlyIncreasingValues),     std::less<int>()) ==      a_end(strictlyIncreasingValues));
-    BOOST_CHECK (  ba::is_sorted_until ( a_range(strictlyIncreasingValues), std::less<int>()) == boost::end(strictlyIncreasingValues));
-
-    BOOST_CHECK ( ba::is_sorted_until ( b_e(nonConstantArray),     std::less<int>()) !=      a_end(nonConstantArray));
-    BOOST_CHECK ( ba::is_sorted_until ( a_range(nonConstantArray), std::less<int>()) != boost::end(nonConstantArray));
-
-    BOOST_CHECK ( ba::is_sorted_until ( b_e(randomValues),     std::less<int>()) == &randomValues[2] );
-    BOOST_CHECK ( ba::is_sorted_until ( a_range(randomValues), std::less<int>()) == &randomValues[2] );
-
-    BOOST_CHECK ( ba::is_sorted_until ( b_e(randomValues),     std::less<int>()) == &randomValues[2] );
-    BOOST_CHECK ( ba::is_sorted_until ( a_range(randomValues), std::less<int>()) == &randomValues[2] );
-
-    BOOST_CHECK ( ba::is_sorted_until ( a_range(inOrderUntilTheEnd), std::less<int>()) == &inOrderUntilTheEnd[8] );
-
-//  For zero and one element collections, the comparison predicate should never be called
-    BOOST_CHECK ( ba::is_sorted_until ( a_begin(randomValues), a_begin(randomValues),     std::equal_to<int>()) == a_begin(randomValues));
-    BOOST_CHECK ( ba::is_sorted_until ( a_begin(randomValues), a_begin(randomValues) + 1, std::equal_to<int>()) == a_begin(randomValues) + 1);
-
 }
 
 int test_main( int, char * [] )
 {
     test_ordered ();
-
+	test_increasing_decreasing ();
     return 0;
 }