Pass by reference problem

Warning: Call-time pass-by-reference has been deprecated; If you would like to pass it by reference, modify the declaration of [runtime function name](). If you would like to enable call-time pass-by-reference, you can set allow_call_time_pass_reference to true in your INI file. in /www/sites/all/modules/spam/spam.module on line 375

Error upon calling administer/modules after uploading of module files.