Warning: Received `false` for a non-boolean attribute in Tooltip

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Hi, i have an error message in console. Everything work fine but ...

this error message show from start, when component is rendering.

My Example

state:
this.state = { emailtooltipvisible: false }
render:
<Tooltip visible={this.state.emailtooltipvisible} defaultVisible={false} id="emailhint" overlay={<span>Text</span>} > <input aria-describedby="emailhint" id="email" name="email" type="email" /> </Tooltip>

this.state.emailtooltipvisible ? true : false also dont help