diff --git a/configure b/configure
index 9e9224a..0d9e495 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 1.393 .
+# From configure.in Revision: 1.394 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.53 for python 2.3.
 #
@@ -16821,6 +16821,23 @@
 echo "${ECHO_T}no" >&6
 fi
 
+echo "$as_me:$LINENO: checking for /dev/ptc" >&5
+echo $ECHO_N "checking for /dev/ptc... $ECHO_C" >&6
+
+if test -e /dev/ptc
+then
+  echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_DEV_PTC 1
+_ACEOF
+
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
 echo "$as_me:$LINENO: checking for socklen_t" >&5
 echo $ECHO_N "checking for socklen_t... $ECHO_C" >&6
 if test "${ac_cv_type_socklen_t+set}" = set; then