diff --git a/server/wsproxy/iomgr.cc b/server/wsproxy/iomgr.cc
index a130c21..0e3579d 100644
--- a/server/wsproxy/iomgr.cc
+++ b/server/wsproxy/iomgr.cc
@@ -23,7 +23,7 @@ std::shared_ptr<asio::io_context> IoMgr::GetIoContext(int type)
 {
     if (type >= 0 && type < io_contexts_.size()) {
         auto& contexts = io_contexts_.at(type);
-        if (contexts.empty()) {
+        if (!contexts.empty()) {
             return contexts.at(rand() % contexts.size());
         }
     }