-

diff --git a/configure b/configure
index 78e120d..5e9f2f5 100755
--- a/configure
+++ b/configure
@@ -2228,7 +2228,7 @@ EOF
 echo $ac_n "checking for correct poll prototype""... $ac_c" 1>&6
 echo "configure:2230: checking for correct poll prototype" >&5
 PROTO=
-for testproto in 'struct pollfd *ufds, unsigned long nfds, int timeout' 
+for testproto in 'struct pollfd *ufds, nfds_t nfds, int timeout' 
 do
   if test "${PROTO}" = ""; then
     cat > conftest.$ac_ext <<EOF