diff --git a/base/BUILD.gn b/base/BUILD.gn
index 3efe4995f43773f874529a106fbd164bb0c1b814..2631b81366347dcc82342c7480b495220f096416 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -37,9 +37,6 @@ config("utils_config") {
   if (current_os == "mac") {
     defines += [ "MAC_PLATFORM" ]
   }
-  if (is_emulator == true) {
-    defines += [ "EMULATOR_PLATFORM" ]
-  }
   if (current_os == "ohos") {
     defines += [ "OHOS_PLATFORM" ]
   }
diff --git a/base/src/io_event_reactor.cpp b/base/src/io_event_reactor.cpp
index 00eb324dc4da416cccde3044561f8413da51fb82..6772e566dfd68d026ea93685b37cd9aa1f95d145 100644
--- a/base/src/io_event_reactor.cpp
+++ b/base/src/io_event_reactor.cpp
@@ -164,6 +164,10 @@ ErrCode IOEventReactor::RemoveHandler(IOEventHandler* target)
 
 bool IOEventReactor::HasHandler(IOEventHandler* target)
 {
+    if (target->fd_ >= ioHandlers_.size()) {
+        return false;
+    }
+    
     for (IOEventHandler* cur = ioHandlers_[target->fd_].head.get(); cur != nullptr; cur = cur->next_) {
         if (cur == target) {
             return true;