diff --git a/installer/data/mysql/atomicupdate/FinePaymentAutoPopup.perl b/installer/data/mysql/atomicupdate/FinePaymentAutoPopup.perl
index 8e1128cd9d..7e19e5fd67 100644
--- a/installer/data/mysql/atomicupdate/FinePaymentAutoPopup.perl
+++ b/installer/data/mysql/atomicupdate/FinePaymentAutoPopup.perl
@@ -1,10 +1,18 @@
-$DBversion = 'XXX'; # will be replaced by the RM
-if( CheckVersion( $DBversion ) ) {
-    $dbh->do({
-        INSERT INTO systempreferences ( `variable`, `value`, `options`, `explanation`, `type` ) VALUES
-        ('FinePaymentAutoPopup','0',NULL,'If enabled, automatically display a print dialog for a payment receipt when making a payment.','YesNo')
+$DBversion = 'XXX';    # will be replaced by the RM
+if ( CheckVersion($DBversion) ) {
+    $dbh->do(q{
+        INSERT IGNORE INTO systempreferences (variable, value, options, explanation, type)
+        VALUES
+          (
+            'FinePaymentAutoPopup',
+            '0',
+            NULL,
+            'If enabled, automatically display a print dialog for a payment receipt when making a payment.',
+            'YesNo'
+          )
     });
 
-    SetVersion( $DBversion );
-    print "Upgrade to $DBversion done (Bug 23228 - Add option to automatically display payment receipt for printing after making a payment)\n";
+    SetVersion($DBversion);
+    print
+"Upgrade to $DBversion done (Bug 23228 - Add option to automatically display payment receipt for printing after making a payment)\n";
 }