diff --git a/sbin/upgrade.pl b/sbin/upgrade.pl
index ddfd74be6..1857cf393 100644
--- a/sbin/upgrade.pl
+++ b/sbin/upgrade.pl
@@ -226,18 +226,12 @@ foreach my $filename (keys %config) {
                 	}
 		}
 		if ($upgrade{$upgrade}{pl} ne "") {
-            my $pid = fork;
-            if (!$pid) {
-                @ARGV = ("--configFile=$filename", $quiet ? ('--quiet') : ());
-                $0 = $upgrade{$upgrade}{pl};
-                do $0;
-                exit;
-            }
-            waitpid $pid, 0;
-            if ($?) {
-                print "\tProcessing upgrade executable failed!\n";
-                fatalError();
-            }
+			my $cmd = $perl." ".$upgrade{$upgrade}{pl}." --configFile=".$filename;
+			$cmd .= " --quiet" if ($quiet);
+			if (system($cmd)) {
+				print "\tProcessing upgrade executable failed!\n";
+				fatalError();
+			}
 		}
 		$config{$filename}{version} = $upgrade{$upgrade}{to};
 		$notRun = 0;