diff --git a/bundles/org.openhab.ui/web/src/assets/definitions/metadata/alexa/constants.js b/bundles/org.openhab.ui/web/src/assets/definitions/metadata/alexa/constants.js
index 466438cc94..d2972323a8 100644
--- a/bundles/org.openhab.ui/web/src/assets/definitions/metadata/alexa/constants.js
+++ b/bundles/org.openhab.ui/web/src/assets/definitions/metadata/alexa/constants.js
@@ -54,6 +54,6 @@ export const UNITS_OF_MEASURE = {
   'Volume.Pints': 'pt',
   'Volume.Quarts': 'qt',
   'Volume.Liters': 'l',
-  'Volume.CubicMeters': 'm3',
-  'Volume.CubicFeet': 'ft3'
+  'Volume.CubicMeters': 'm³',
+  'Volume.CubicFeet': 'ft³'
 }