diff --git a/src/utils.ts b/src/utils.ts
index 7fe1d53..4967f6e 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -4,8 +4,8 @@ import { getArea } from "ol/sphere";
 /**
  * Calculate & format the area of a polygon
  * @param polygon
- * @param units - defaults to square metres, or supports "ha" for hectares
- * @returns - a string with html tags
+ * @param units - defaults to square metres ("m2"), or supports "ha" for hectares
+ * @returns - a string
  */
 export function formatArea(polygon: Geometry, units: String = "m2") {
   const area = getArea(polygon);
@@ -15,7 +15,7 @@ export function formatArea(polygon: Geometry, units: String = "m2") {
 
   let output;
   if (units === "m2") {
-    output = squareMetres + " m<sup>2</sup>";
+    output = squareMetres + " m²";
   } else if (units === "ha") {
     output = hectares + " ha";
   }