diff --git a/api/src/main/java/club/minnced/discord/jdave/manager/DaveSessionManager.java b/api/src/main/java/club/minnced/discord/jdave/manager/DaveSessionManager.java
index 9b08f78..b16951a 100644
--- a/api/src/main/java/club/minnced/discord/jdave/manager/DaveSessionManager.java
+++ b/api/src/main/java/club/minnced/discord/jdave/manager/DaveSessionManager.java
@@ -138,6 +138,10 @@ public synchronized void addUser(long userId) {
             return;
         }
 
+        if (decryptors.containsKey(userId)) {
+            return;
+        }
+
         log.debug("Adding user {}", userId);
         DaveDecryptor decryptor = decryptors.computeIfAbsent(userId, id -> DaveDecryptor.create(id, session));
         decryptor.prepareTransition(currentProtocolVersion);
@@ -299,7 +303,13 @@ private void prepareProtocolTransition(int transitionId, int protocolVersion) {
 
     private void executeProtocolTransition(int transitionId) {
         Integer protocolVersion = preparedTransitions.remove(transitionId);
+
         if (protocolVersion == null) {
+            if (transitionId == DaveConstants.INIT_TRANSITION_ID) {
+                log.debug("Passing through transition with ID 0");
+                return;
+            }
+
             log.warn("Unexpected Transition ID {}", transitionId);
             return;
         }