diff --git a/index.d.ts b/index.d.ts
index db49f54..ee355ae 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -35,6 +35,6 @@ declare module "@friendsofreactjs/react-css-themr" {
     identifier: string | number | symbol,
     defaultTheme?: {},
     options?: IThemrOptions
-  ): <P, S>(component: (new(props?: P, context?: any) => React.Component<P, S>) | React.SFC<P>) =>
+  ): <P, S>(component: (new(props: P, context?: any) => React.Component<P, S>) | React.SFC<P>) =>
     ThemedComponentClass<P & { mapThemrProps?: TMapThemrProps<P> }, S>;
 }