diff --git a/include/boost/algorithm/searching/boyer_moore_horspool.hpp b/include/boost/algorithm/searching/boyer_moore_horspool.hpp
index 5e59cf3..758ded2 100755
--- a/include/boost/algorithm/searching/boyer_moore_horspool.hpp
+++ b/include/boost/algorithm/searching/boyer_moore_horspool.hpp
@@ -14,6 +14,11 @@
 
 #include <boost/assert.hpp>
 #include <boost/static_assert.hpp>
+
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+
+#include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_same.hpp>
 
 #include <boost/algorithm/searching/detail/bm_traits.hpp>
diff --git a/include/boost/algorithm/searching/knuth_morris_pratt.hpp b/include/boost/algorithm/searching/knuth_morris_pratt.hpp
index cc83185..aaeeb51 100755
--- a/include/boost/algorithm/searching/knuth_morris_pratt.hpp
+++ b/include/boost/algorithm/searching/knuth_morris_pratt.hpp
@@ -15,6 +15,11 @@
 
 #include <boost/assert.hpp>
 #include <boost/static_assert.hpp>
+
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+
+#include <boost/utility/enable_if.hpp>
 #include <boost/type_traits/is_same.hpp>
 
 #include <boost/algorithm/searching/detail/debugging.hpp>