--- EV/Makefile.PL	2014/09/06 18:42:18	1.55
+++ EV/Makefile.PL	2014/09/06 19:03:28	1.56
@@ -8,6 +8,8 @@
    scalar grep -r "$_/$_[0]", $Config{usrinc}, split / /, $Config{incpth}
 }
 
+my $DEFINE;
+
 unless (-e "libev/ev_epoll.c") {
    print <<EOF;
 
@@ -50,7 +52,9 @@
 
 EOF
 
-my $DEFINE .= " -DEV_USE_MONOTONIC=" . (0 + (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/));
+unless (prompt ("Enable optional support for CLOCK_MONOTONIC (y/n)?", "y") =~ /[yY]/) {
+   $DEFINE .= " -DEV_USE_MONOTONIC=0";
+}
 
 print <<EOF;