diff --git a/configure b/configure
index affb7c3..6dc7cae 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 1.319 .
+# From configure.in Revision: 1.320 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.53.
 #
@@ -11278,7 +11278,6 @@
 
 
 
-
 for ac_func in alarm chown chroot clock confstr ctermid ctermid_r execv \
  fchdir flock fork fsync fdatasync fpathconf ftime ftruncate \
  gai_strerror getgroups getlogin getpeername getpid getpwent getwd \
@@ -11287,7 +11286,7 @@
  putenv readlink \
  select setegid seteuid setgid setgroups \
  setlocale setregid setreuid setsid setpgid setuid setvbuf snprintf \
- sigaction siginterrupt sigprocmask sigrelse strftime strptime symlink \
+ sigaction siginterrupt sigrelse strftime strptime symlink \
  sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
  truncate uname unsetenv waitpid _getpty getpriority
 do
diff --git a/configure.in b/configure.in
index ffdc279..609ffcb 100644
--- a/configure.in
+++ b/configure.in
@@ -1583,7 +1583,7 @@
  putenv readlink \
  select setegid seteuid setgid setgroups \
  setlocale setregid setreuid setsid setpgid setuid setvbuf snprintf \
- sigaction siginterrupt sigprocmask sigrelse strftime strptime symlink \
+ sigaction siginterrupt sigrelse strftime strptime symlink \
  sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
  truncate uname unsetenv waitpid _getpty getpriority)
 
diff --git a/pyconfig.h.in b/pyconfig.h.in
index bf616d4..86bd6c8 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -383,9 +383,6 @@
 /* Define to 1 if you have the <signal.h> header file. */
 #undef HAVE_SIGNAL_H
 
-/* Define to 1 if you have the `sigprocmask' function. */
-#undef HAVE_SIGPROCMASK
-
 /* Define to 1 if you have the `sigrelse' function. */
 #undef HAVE_SIGRELSE