diff --git a/client/net_xfer.C b/client/net_xfer.C
index de5bdf0585..12c92d72cc 100644
--- a/client/net_xfer.C
+++ b/client/net_xfer.C
@@ -30,6 +30,7 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <string.h>
 
 #include "error_numbers.h"
 #include "log_flags.h"