diff --git a/rosapps/applications/net/netreg/netreg.cpp b/rosapps/applications/net/netreg/netreg.cpp
index 9b5ef82ea89..53e23369d7f 100644
--- a/rosapps/applications/net/netreg/netreg.cpp
+++ b/rosapps/applications/net/netreg/netreg.cpp
@@ -10,6 +10,7 @@
 #include <windows.h>
 #include <winsock.h>
 #include <stdlib.h>
+#include <stdio.h>
 #include <map>
 #include <string>
 #include <sstream>