parens help alot

1 files changed, 1 insertions, 1 deletions

diff --git a/FS/FS/Upgrade.pm b/FS/FS/Upgrade.pm
index 37167a8af..55eed8ea1 100644
--- a/FS/FS/Upgrade.pm
+++ b/FS/FS/Upgrade.pm
@@ -122,7 +122,7 @@ sub upgrade_sqlradius {
       { PrintError => 0, PrintWarn => 0 }
     );
 
-    unless $dbh {
+    unless ($dbh) {
       warn "can't connect to RADIUS database ".
            $part_export->option('datasrc').  ": $DBI::errstr\n";
       next;