diff --git a/test/generic_category_test2.cpp b/test/generic_category_test2.cpp
index 10396bd..dc35ec1 100644
--- a/test/generic_category_test2.cpp
+++ b/test/generic_category_test2.cpp
@@ -4,7 +4,6 @@
 
 #include <boost/system/generic_category.hpp>
 #include <boost/core/lightweight_test.hpp>
-#include <cstring>
 
 // Tests whether generic_category() is functional when only
 // generic_category.hpp is included
diff --git a/test/system_category_test2.cpp b/test/system_category_test2.cpp
index 46e02a8..0cb25a8 100644
--- a/test/system_category_test2.cpp
+++ b/test/system_category_test2.cpp
@@ -4,7 +4,6 @@
 
 #include <boost/system/system_category.hpp>
 #include <boost/core/lightweight_test.hpp>
-#include <cstring>
 
 // Tests whether system_category() is functional when only
 // system_category.hpp is included