diff --git a/src/cli/cli.cpp b/src/cli/cli.cpp
index cb7081bb3..e41d3a798 100644
--- a/src/cli/cli.cpp
+++ b/src/cli/cli.cpp
@@ -70,7 +70,6 @@ const struct Command Interpreter::sCommands[] =
     { "route", &ProcessRoute },
     { "routerupgradethreshold", &ProcessRouterUpgradeThreshold },
     { "scan", &ProcessScan },
-    { "shutdown", &ProcessShutdown },
     { "start", &ProcessStart },
     { "state", &ProcessState },
     { "stop", &ProcessStop },
@@ -915,14 +914,6 @@ exit:
     sServer->Output(sResponse.GetResponse(), sResponse.GetResponseLength());
 }
 
-void Interpreter::ProcessShutdown(int argc, char *argv[])
-{
-    AppendResult(kThreadError_None);
-    sServer->Output(sResponse.GetResponse(), sResponse.GetResponseLength());
-    otPlatSerialDisable();
-    exit(0);
-}
-
 void Interpreter::ProcessStart(int argc, char *argv[])
 {
     ThreadError error = kThreadError_None;
diff --git a/src/cli/cli.hpp b/src/cli/cli.hpp
index 2ba7034f4..0ff3bcd09 100644
--- a/src/cli/cli.hpp
+++ b/src/cli/cli.hpp
@@ -162,7 +162,6 @@ private:
     static void ProcessRouterUpgradeThreshold(int argc, char *argv[]);
     static void ProcessRloc16(int argc, char *argv[]);
     static void ProcessScan(int argc, char *argv[]);
-    static void ProcessShutdown(int argc, char *argv[]);
     static void ProcessStart(int argc, char *argv[]);
     static void ProcessState(int argc, char *argv[]);
     static void ProcessStop(int argc, char *argv[]);
diff --git a/tests/scripts/thread-cert/node.py b/tests/scripts/thread-cert/node.py
index a0d06a1dc..3a5b80c71 100755
--- a/tests/scripts/thread-cert/node.py
+++ b/tests/scripts/thread-cert/node.py
@@ -69,10 +69,6 @@ class Node:
         self.pexpect = fdpexpect.fdspawn(os.open(serialPort, os.O_RDWR|os.O_NONBLOCK|os.O_NOCTTY))
 
     def __del__(self):
-        if self.node_type == 'sim':
-            self.send_command('shutdown')
-            self.pexpect.expect('Done')
-
         self.pexpect.terminate()
         self.pexpect.close(force=True)