# at-mixin-argumentless-call-parentheses Require or disallow parentheses in argumentless `@mixin` calls. ```scss @include mixin-name() { /** ↑ * Such mixin calls */ ``` ## Options `string`: `"always"|"never"` ### `"always"` There *must always* be parentheses in mixin calls, even if no arguments are passed. The following patterns are considered warnings: ```scss @include mixin-name; ``` The following patterns are *not* considered warnings: ```scss @include mixin-name(); ``` ### `"never"` There *must never* be parentheses when calling a mixin without arguments. The following patterns are considered warnings: ```scss @include mixin-name(); ``` The following patterns are *not* considered warnings: ```scss @include mixin-name; ```