diff --git a/server/gameserver/incubator.cc b/server/gameserver/incubator.cc
index 1261692..87552ed 100644
--- a/server/gameserver/incubator.cc
+++ b/server/gameserver/incubator.cc
@@ -156,7 +156,7 @@ void Incubator::AutoAllocAndroid()
                 Human* hum = hold_humans_[0];
                 if (room->GetGasData().gas_mode == GasWaiting &&
                     hold_humans_.size() > 1 &&
-                    ((rand() % 100) > 30)) {
+                    ((rand() % 100) > 40)) {
                     Human* killer = nullptr;
                     if (hold_humans_.size() == 2) {
                         killer = hold_humans_[1];