diff --git a/ts/services/calling.ts b/ts/services/calling.ts
index 2bc6015f55..fc120df518 100644
--- a/ts/services/calling.ts
+++ b/ts/services/calling.ts
@@ -127,6 +127,7 @@ import {
 } from '../util/callDisposition';
 import { isNormalNumber } from '../util/isNormalNumber';
 import { LocalCallEvent } from '../types/CallDisposition';
+import { isServiceIdString } from '../types/ServiceId';
 import { isInSystemContacts } from '../util/isInSystemContacts';
 import {
   getRoomIdFromRootKey,
@@ -2287,7 +2288,10 @@ export class CallingClass {
       Boolean(message.offer);
 
     try {
-      assertDev(isAciString(remoteUserId), 'remoteUserId is not a aci');
+      assertDev(
+        isServiceIdString(remoteUserId),
+        'remoteUserId is not a service id'
+      );
       const result = await handleMessageSend(
         window.textsecure.messaging.sendCallingMessage(
           remoteUserId,
diff --git a/ts/state/smart/CallManager.tsx b/ts/state/smart/CallManager.tsx
index 8d20c010b4..150b0e72bc 100644
--- a/ts/state/smart/CallManager.tsx
+++ b/ts/state/smart/CallManager.tsx
@@ -27,7 +27,6 @@ import type {
   ConversationsByDemuxIdType,
   GroupCallRemoteParticipantType,
 } from '../../types/Calling';
-import { isAciString } from '../../util/isAciString';
 import type { AciString } from '../../types/ServiceId';
 import { CallMode, CallState } from '../../types/Calling';
 import type { CallLinkType } from '../../types/CallLink';
@@ -194,11 +193,6 @@ const mapStateToActiveCallProp = (
         return;
       }
 
-      strictAssert(
-        isAciString(conversation.serviceId),
-        'Conversation must have aci'
-      );
-
       return {
         ...baseResult,
         callEndedReason: call.callEndedReason,