Index: sites/all/modules/variable_dump/variable_dump.module
===================================================================
--- sites/all/modules/variable_dump/variable_dump.module	(revision 224)
+++ sites/all/modules/variable_dump/variable_dump.module	(working copy)
@@ -101,7 +101,7 @@
   $i = 1;
   while ($row = db_fetch_object($result)) {
     $value = unserialize($row->value);
-    $export .= 'variable_set('. $row->name .', '. var_export($value, true) .');';
+    $export .= 'variable_set(\''. $row->name .'\', '. var_export($value, true) .');';
     $export .= "\n";
     $i++;
   }