diff --git a/src/t/base/map.cpp b/src/t/base/map.cpp
index e7a969b5..1277bae9 100644
--- a/src/t/base/map.cpp
+++ b/src/t/base/map.cpp
@@ -27,7 +27,6 @@ lolunit_declare_fixture(MapTest)
         map<int, int> m2;
         map<float, float> m3;
         map<char const *, char const *> m4;
-        map<String, String> m4;
     }
 
     lolunit_declare_test(MapSet)