diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java b/service/src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java
index 599a1b95e..5fb60c5e2 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/controllers/AccountController.java
@@ -169,6 +169,7 @@ public class AccountController {
 
     accounts.updateDevice(account, device.getId(), d -> {
       d.setApnId(null);
+      d.setVoipApnId(null);
       d.setFetchesMessages(false);
       if (d.getId() == 1) {
         d.setUserAgent("OWI");