diff --git a/server/modules/routing/readwritesplit/rwsplit_session_cmd.cc b/server/modules/routing/readwritesplit/rwsplit_session_cmd.cc
index 7726b9985..2c462d2a7 100644
--- a/server/modules/routing/readwritesplit/rwsplit_session_cmd.cc
+++ b/server/modules/routing/readwritesplit/rwsplit_session_cmd.cc
@@ -86,7 +86,6 @@ void RWSplitSession::process_sescmd_response(SRWBackend& backend, GWBUF** ppPack
 {
     if (backend->has_session_commands())
     {
-        mxb_assert(GWBUF_IS_COLLECTED_RESULT(*ppPacket));
         uint8_t cmd;
         gwbuf_copy_data(*ppPacket, MYSQL_HEADER_LEN, 1, &cmd);
         uint8_t command = backend->next_session_command()->get_command();
@@ -95,6 +94,8 @@ void RWSplitSession::process_sescmd_response(SRWBackend& backend, GWBUF** ppPack
         MXS_PS_RESPONSE resp = {};
         bool discard = true;
 
+        mxb_assert(GWBUF_IS_COLLECTED_RESULT(*ppPacket) || command == MXS_COM_CHANGE_USER);
+
         if (command == MXS_COM_STMT_PREPARE && cmd != MYSQL_REPLY_ERR)
         {
             // This should never fail or the backend protocol is broken