diff --git a/src/ReactNativeSVG.web.ts b/src/ReactNativeSVG.web.ts
index b8c399d9..0885adc1 100644
--- a/src/ReactNativeSVG.web.ts
+++ b/src/ReactNativeSVG.web.ts
@@ -62,7 +62,7 @@ function prepare(props) {
     clean.ref = forwardedRef;
   }
 
-  if (props.onPress && !props.onClick){
+  if (props.onPress && !props.onClick) {
     clean.onClick = props.onPress;
   }
 
diff --git a/src/index.js.flow b/src/index.js.flow
index 0c6d973f..84d51279 100644
--- a/src/index.js.flow
+++ b/src/index.js.flow
@@ -404,6 +404,27 @@ export type MaskProps = {
   ...
 } & CommonPathProps;
 declare export var Mask: React.ComponentClass<MaskProps>;
+declare export var MarkerUnits: {|
+  +STROKE_WIDTH: "strokeWidth", // "strokeWidth"
+  +USER_SPACE_ON_USE: "userSpaceOnUse" // "userSpaceOnUse"
+|};
+
+declare export var Orient: {|
+  +AUTO: "auto", // "auto"
+  +AUTO_START_REVERSE: "auto-start-reverse" // "auto-start-reverse"
+|};
+export interface MarkerProps {
+  id?: string;
+  viewBox?: string;
+  preserveAspectRatio?: string;
+  refX?: NumberProp;
+  refY?: NumberProp;
+  markerWidth?: NumberProp;
+  markerHeight?: NumberProp;
+  markerUnits?: $Values<typeof MarkerUnits>;
+  orient?: $Values<typeof Orient> | NumberProp;
+}
+declare export var Marker: React.ComponentClass<MarkerProps>;
 export type Styles = {
   [property: string]: string,
   ...