diff --git a/kernel_lite/ipc_posix/signal/SignalTest.h b/kernel_lite/ipc_posix/signal/SignalTest.h
index 1a58b0e40492122b5af9f2f3140a45c5f1d6407d..18b61a2d91a83f957461773d9bf4d3d6d7ba8a65 100755
--- a/kernel_lite/ipc_posix/signal/SignalTest.h
+++ b/kernel_lite/ipc_posix/signal/SignalTest.h
@@ -21,6 +21,7 @@
 
 const int MAX_SIGNAL = 31;
 const int MAX_DESCRP_LEN = 32;
+const int KEEP_RUN_TIME = 150;
 enum SignalAction {TERMINATE, COREDUMP, IGNORE, STOP, CONTINUE};
 struct SignalNameAction {
     char signame[12];
diff --git a/kernel_lite/ipc_posix/signal/SignalTestUtils.cpp b/kernel_lite/ipc_posix/signal/SignalTestUtils.cpp
index 9919eb5e58791b7b0ff766682403cf9c7c90753c..71cebcd2f7c678ae6c950d267df5c213ac7796f3 100755
--- a/kernel_lite/ipc_posix/signal/SignalTestUtils.cpp
+++ b/kernel_lite/ipc_posix/signal/SignalTestUtils.cpp
@@ -29,6 +29,7 @@ int IpcSignalTest::mReceivedSignal = 0;
 int IpcSignalTest::mShmid = 0;
 siginfo_t IpcSignalTest::mSiginfo;
 
+
 // special signal hander for function 'abort'
 void IpcSignalTest::SigAbortHandler(int signum)
 {
@@ -115,7 +116,7 @@ void IpcSignalTest::DefaultActionTest(const int signum, const bool expectStop, c
         }
     } else { // child
         LOGD("child start");
-        KeepRun(100);
+        KeepRun(KEEP_RUN_TIME);
         if (expectStop) {
             LOG("Child should has been Terminated, but still alive.");
             exit(1);