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--- a/src/bincimapmime/mime-getpart.cc
+++ b/src/bincimapmime/mime-getpart.cc
@@ -40,7 +40,9 @@
 #include <stdio.h>
 #include <errno.h>
 
+#ifndef NO_NAMESPACES
 using namespace ::std;
+#endif /* NO_NAMESPACES */
 
 //------------------------------------------------------------------------
 const Binc::MimePart *Binc::MimePart::getPart(const string &findpart,