diff --git a/contrib/bin/fusiondirectory-setup b/contrib/bin/fusiondirectory-setup
index cce851fbbbd19fdacf8ae3d713b44a18c3ffce40..0313fc41574ad86484c78897cc6292b1c84e7eaa 100644
--- a/contrib/bin/fusiondirectory-setup
+++ b/contrib/bin/fusiondirectory-setup
@@ -1957,7 +1957,7 @@ sub show_version {
   my $vars_file;
 
   if (-e $variables_common_path) {
-    open($vars_file, $variables_common_path) || die ("Could not open $variables_common_path");
+    open($vars_file, q{<}, $variables_common_path) || die ("Could not open $variables_common_path");
     while(<$vars_file>) {
       if ($_ =~ m/^define \(["']FD_VERSION["'], "([^"]+)"\);/) {
         print "FusionDirectory version is $1\n";