diff --git a/appl/telnet/config.h.in b/appl/telnet/config.h.in
index 2ec48a632..d7f5275e1 100644
--- a/appl/telnet/config.h.in
+++ b/appl/telnet/config.h.in
@@ -63,6 +63,9 @@
 /* Define if you have the revoke function.  */
 #undef HAVE_REVOKE
 
+/* Define if you have the setpgid function.  */
+#undef HAVE_SETPGID
+
 /* Define if you have the setsid function.  */
 #undef HAVE_SETSID
 
@@ -149,7 +152,7 @@
 #define FILIO_H 1
 #define STREAMS 1
 
-#ifdef __svr4__
+#if defined(__svr4__) || defined(__SVR4)
 #define SOLARIS
 #endif
 
diff --git a/appl/telnet/configure b/appl/telnet/configure
index c4f0dee68..a10453ddc 100755
--- a/appl/telnet/configure
+++ b/appl/telnet/configure
@@ -888,7 +888,7 @@ fi
 done
 
 
-for ac_func in cgetent uname vfork vhangup frevoke revoke setsid
+for ac_func in cgetent uname vfork vhangup frevoke revoke setsid setpgid
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then