diff --git a/src/components/structures/CallEventGrouper.ts b/src/components/structures/CallEventGrouper.ts
index 861c978bb0..2b18a4316c 100644
--- a/src/components/structures/CallEventGrouper.ts
+++ b/src/components/structures/CallEventGrouper.ts
@@ -86,7 +86,7 @@ export default class CallEventGrouper extends EventEmitter {
         return Boolean(this.reject);
     }
 
-    public get length(): Date {
+    public get duration(): Date {
         if (!this.hangup || !this.selectAnswer) return;
         return new Date(this.hangup.getDate().getTime() - this.selectAnswer.getDate().getTime());
     }
diff --git a/src/components/views/messages/CallEvent.tsx b/src/components/views/messages/CallEvent.tsx
index 107832bfc2..bc868c35b3 100644
--- a/src/components/views/messages/CallEvent.tsx
+++ b/src/components/views/messages/CallEvent.tsx
@@ -132,10 +132,10 @@ export default class CallEvent extends React.Component<IProps, IState> {
                 // https://github.com/vector-im/riot-android/issues/2623
                 // Also the correct hangup code as of VoIP v1 (with underscore)
                 // Also, if we don't have a reason
-                const length = this.props.callEventGrouper.length;
+                const duration = this.props.callEventGrouper.duration;
                 let text = _t("Call ended");
-                if (length) {
-                    text += " • " + formatCallTime(length);
+                if (duration) {
+                    text += " • " + formatCallTime(duration);
                 }
                 return (
                     <div className="mx_CallEvent_content">