@@ -165,7 +165,7 @@  | 
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| 165 | 165 | /**  | 
                                                        
| 166 | 166 | * Remove an attribute from the request.  | 
                                                        
| 167 | 167 | *  | 
                                                        
| 168 | - * @param mixed $attribute  | 
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| 168 | + * @param string $attribute  | 
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| 169 | 169 | *  | 
                                                        
| 170 | 170 | * @return void  | 
                                                        
| 171 | 171 | */  |