diff --git a/Foundation/include/Poco/Buffer.h b/Foundation/include/Poco/Buffer.h
index 961fffec9..ceaac0a93 100644
--- a/Foundation/include/Poco/Buffer.h
+++ b/Foundation/include/Poco/Buffer.h
@@ -42,6 +42,7 @@
 
 #include "Poco/Foundation.h"
 #include <cstddef>
+#include <cstring>
 
 
 namespace Poco {