1 files changed, 1 insertions, 1 deletions

diff --git a/lib-src/ntlib.h b/lib-src/ntlib.h
index d328913d71d..be8d2a58a50 100644
--- a/lib-src/ntlib.h
+++ b/lib-src/ntlib.h
@@ -38,7 +38,7 @@ unsigned getuid (void);
 unsigned getegid (void);
 unsigned getgid (void);
 int setuid (unsigned uid);
-int setegid (unsigned gid);
+int setregid (unsigned rgid, unsigned gid);
 char * getpass (const char * prompt);
 int fchown (int fd, unsigned uid, unsigned gid);