diff --git a/lib/BorderShadow.js b/lib/BorderShadow.js
index 2c94854..65f001c 100644
--- a/lib/BorderShadow.js
+++ b/lib/BorderShadow.js
@@ -22,7 +22,7 @@ export default class BorderShadow extends Component {
 					switch (side){
 						case "top":
 							return [
-								<Svg height={lineWidth} width={width+lineWidth} style={{position:"absolute",top:(inset?0:-lineWidth)}}>
+								<Svg height={lineWidth} width={width+lineWidth} style={{position:"absolute",top:(inset?0:-lineWidth)}} key={side}>
 									<Defs><LinearGradient id="top" x1="0" y1={lineWidth} x2="0" y2="0">{linear('BorderTop')}</LinearGradient>
 										<LinearGradient id="top-inset" x1="0" y1="0" x2="0" y2={lineWidth}>{linear('BorderTopInset')}</LinearGradient></Defs>
 									<Rect x={0} y={0} width={width} height={lineWidth} fill={`url(#top${inset?"-inset":""})`} />
@@ -32,7 +32,7 @@ export default class BorderShadow extends Component {
 						case "bottom":
 							return [
 								...children,
-								<Svg height={lineWidth} width={width+lineWidth} style={{position:"absolute",bottom:(inset?-lineWidth:0)}}>
+								<Svg height={lineWidth} width={width+lineWidth} style={{position:"absolute",bottom:(inset?-lineWidth:0)}} key={side}>
 									<Defs><LinearGradient id="bottom" x1="0" y1="0" x2="0" y2={lineWidth}>{linear('BorderBottom')}</LinearGradient>
 										<LinearGradient id="bottom-inset" x1="0" y1={lineWidth} x2="0" y2="0">{linear('BorderBottomInset')}</LinearGradient></Defs>
 									<Rect x={0} y={0} width={width} height={lineWidth} fill={`url(#bottom${inset?"-inset":""})`} />