diff --git a/dist/libsignal-protocol.js b/dist/libsignal-protocol.js
index b9d97c8..9614701 100644
--- a/dist/libsignal-protocol.js
+++ b/dist/libsignal-protocol.js
@@ -35626,7 +35626,7 @@ Internal.SessionRecord = function() {
         },
         haveOpenSession: function() {
             var openSession = this.getOpenSession();
-            return (!!openSession && !!openSession.registrationId);
+            return (!!openSession && typeof openSession.registrationId === 'number');
         },
 
         getSessionByBaseKey: function(baseKey) {
diff --git a/src/SessionRecord.js b/src/SessionRecord.js
index c0cb3e6..95e3588 100644
--- a/src/SessionRecord.js
+++ b/src/SessionRecord.js
@@ -127,7 +127,7 @@ Internal.SessionRecord = function() {
         },
         haveOpenSession: function() {
             var openSession = this.getOpenSession();
-            return (!!openSession && !!openSession.registrationId);
+            return (!!openSession && typeof openSession.registrationId === 'number');
         },
 
         getSessionByBaseKey: function(baseKey) {