diff --git a/base/src/event_demultiplexer.cpp b/base/src/event_demultiplexer.cpp
index dc5299cf8164ca3a7222911337434f5513bdd6c9..765b7431327a1c1055f3da29e631744de50c0b7d 100644
--- a/base/src/event_demultiplexer.cpp
+++ b/base/src/event_demultiplexer.cpp
@@ -129,7 +129,7 @@ void EventDemultiplexer::Polling(int timeout /* ms */)
         }
     }
 
-    for (int idx = 0; idx < taskQue.size() && idx < eventQue.size(); idx++) {
+    for (size_t idx = 0u; idx < taskQue.size() && idx < eventQue.size(); idx++) {
         taskQue[idx]->HandleEvents(eventQue[idx]);
     }
 
@@ -161,4 +161,4 @@ uint32_t EventDemultiplexer::Reactor2Epoll(uint32_t reactorEvent)
 }
 
 }
-}
\ No newline at end of file
+}