diff --git a/libs/tuple/test/tuple.cpp b/libs/tuple/test/tuple.cpp
index e6844d55..a2b43668 100644
--- a/libs/tuple/test/tuple.cpp
+++ b/libs/tuple/test/tuple.cpp
@@ -222,7 +222,7 @@ namespace testspr {
 			TESTSPR_BOTH_ASSERT(!sprout::tuples::is_tuple<int>::value);
 
 			// hash_value
-			TESTSPR_BOTH_ASSERT((sprout::hash_value(sprout::tuples::tuple<int, int>(1, 2)) != 0));
+			TESTSPR_BOTH_ASSERT((hash_value(sprout::tuples::tuple<int, int>(1, 2)) != 0));
 		}
 	}
 }	// namespace testspr
diff --git a/sprout/functional/hash/hash_value.hpp b/sprout/functional/hash/hash_value.hpp
index 0a4ef211..1d421066 100644
--- a/sprout/functional/hash/hash_value.hpp
+++ b/sprout/functional/hash/hash_value.hpp
@@ -140,4 +140,6 @@ namespace sprout {
 	}
 }	// namespace sprout
 
+#include <sprout/functional/hash/hash_range.hpp>
+
 #endif	// #ifndef SPROUT_FUNCTIONAL_HASH_HASH_VALUE_HPP