1 files changed, 1 insertions, 1 deletions

diff --git a/src/m/alpha.h b/src/m/alpha.h
index 9c33475ebbf..0833299160b 100644
--- a/src/m/alpha.h
+++ b/src/m/alpha.h
@@ -287,7 +287,7 @@ extern void r_alloc_free ();
     {                                                   \
       int dummy;                                        \
       SIGMASKTYPE mask;                                 \
-      mask = sigblockx (SIGCHLD);                       \
+      mask = sigblock (SIGCHLD);                        \
       if (-1 == openpty (&fd, &dummy, pty_name, 0, 0))  \
         fd = -1;                                        \
       sigsetmask (mask);                                \