diff --git a/boost/unordered/detail/equivalent.hpp b/boost/unordered/detail/equivalent.hpp
index d67ab1420fb..2e55bec789e 100644
--- a/boost/unordered/detail/equivalent.hpp
+++ b/boost/unordered/detail/equivalent.hpp
@@ -748,7 +748,7 @@ namespace boost { namespace unordered { namespace detail {
         // strong otherwise exception safety
         void rehash_impl(std::size_t num_buckets)
         {
-            BOOST_ASSERT(this->size_);
+            BOOST_ASSERT(this->buckets_);
 
             this->create_buckets(num_buckets);
             previous_pointer prev = this->get_previous_start();
diff --git a/boost/unordered/detail/unique.hpp b/boost/unordered/detail/unique.hpp
index 3aba72d7627..bd3c63cd43c 100644
--- a/boost/unordered/detail/unique.hpp
+++ b/boost/unordered/detail/unique.hpp
@@ -636,7 +636,7 @@ namespace boost { namespace unordered { namespace detail {
         // strong otherwise exception safety
         void rehash_impl(std::size_t num_buckets)
         {
-            BOOST_ASSERT(this->size_);
+            BOOST_ASSERT(this->buckets_);
 
             this->create_buckets(num_buckets);
             previous_pointer prev = this->get_previous_start();
diff --git a/libs/unordered/test/unordered/insert_tests.cpp b/libs/unordered/test/unordered/insert_tests.cpp
index 2f0631618b4..c167e0eec14 100644
--- a/libs/unordered/test/unordered/insert_tests.cpp
+++ b/libs/unordered/test/unordered/insert_tests.cpp
@@ -229,6 +229,24 @@ void insert_tests2(X*, test::random_generator generator)
         test::check_equivalent_keys(x);
     }
 
+    std::cerr<<"insert range with rehash tests.\n";
+
+    {
+        test::check_instances check_;
+
+        X x;
+
+        test::random_values<X> v(1000, generator);
+
+        x.insert(*v.begin());
+        x.clear();
+
+        x.insert(v.begin(), v.end());
+
+        test::check_container(x, v);
+        test::check_equivalent_keys(x);
+    }
+
     std::cerr<<"insert input iterator range tests.\n";
 
     {