| diff --git a/src/msmtp.c b/src/msmtp.c | |
| index 3c21d2e..fc1d408 100644 | |
| --- a/src/msmtp.c | |
| +++ b/src/msmtp.c | |
| @@ -78,6 +78,8 @@ extern int optind; | |
| /* Default file names. */ | |
| #ifdef W32_NATIVE | |
| +#include <winsock2.h> | |
| + | |
| #define SYSCONFFILE "msmtprc.txt" | |
| #define USERCONFFILE "msmtprc.txt" | |
| #define SYSNETRCFILE "netrc.txt" |