Wrong indentation with t4 templates

I'm currently working with T4 templates and I have noticed that sometimes the code is not indented properly, how can I avoid that?

For instance I have this code in the template

}
    <# } #>
    this.cmbDecisionList.Dat = dataSource;
    this.btnDec.Enabled = dataSource.Count > 0;
}

and in the generated class it's like

}
                 this.cmbDecisionList.Dat = dataSource;
      this.btnDec.Enabled = dataSource.Count > 0;
}