diff --git a/test/test_intrusive_forward_list.cpp b/test/test_intrusive_forward_list.cpp
index df73665d..b3f7054e 100644
--- a/test/test_intrusive_forward_list.cpp
+++ b/test/test_intrusive_forward_list.cpp
@@ -183,6 +183,9 @@ namespace
 
       CHECK(data0.empty());
       CHECK(data1.empty());
+
+      CHECK(data0.begin() == data0.end());
+      CHECK(data1.begin() == data1.end());
     }
 
     //*************************************************************************
diff --git a/test/test_intrusive_list.cpp b/test/test_intrusive_list.cpp
index 048a16a3..a7000dc7 100644
--- a/test/test_intrusive_list.cpp
+++ b/test/test_intrusive_list.cpp
@@ -180,6 +180,9 @@ namespace
 
       CHECK(data0.empty());
       CHECK(data1.empty());
+
+      CHECK(data0.begin() == data0.end());
+      CHECK(data1.begin() == data1.end());
     }
 
     //*************************************************************************
diff --git a/test/test_unordered_map.cpp b/test/test_unordered_map.cpp
index f6246a4b..01af4012 100644
--- a/test/test_unordered_map.cpp
+++ b/test/test_unordered_map.cpp
@@ -188,6 +188,7 @@ namespace
       CHECK_EQUAL(data.size(), size_t(0));
       CHECK(data.empty());
       CHECK_EQUAL(data.max_size(), SIZE);
+      CHECK(data.begin() == data.end());
     }
 
     //*************************************************************************