diff --git a/source/lib/select.c b/source/lib/select.c
index 396ecb5dd6b..fa8aefd6363 100644
--- a/source/lib/select.c
+++ b/source/lib/select.c
@@ -49,7 +49,7 @@ void sys_select_signal(void)
 
 /*******************************************************************
 like select() but avoids the signal race using a pipe
-it also guuarantees that fds on return only ever contains bits set
+it also guarantees that fds on return only ever contains bits set
 for file descriptors that were readable
 ********************************************************************/
 int sys_select(int maxfd, fd_set *fds,struct timeval *tval)