diff --git a/Source/CPack/cpack.cxx b/Source/CPack/cpack.cxx
index 90ec26bb3..ba91a089c 100644
--- a/Source/CPack/cpack.cxx
+++ b/Source/CPack/cpack.cxx
@@ -29,6 +29,7 @@
 #include "cmCPackLog.h"
 
 #include <cmsys/CommandLineArguments.hxx>
+#include <memory> // auto_ptr
 
 //----------------------------------------------------------------------------
 static const char * cmDocumentationName[][3] =