diff --git a/src/cli/Makefile.am b/src/cli/Makefile.am
index 1549a61d9..f2134e9ad 100644
--- a/src/cli/Makefile.am
+++ b/src/cli/Makefile.am
@@ -40,6 +40,7 @@ libopenthread_cli_a_CPPFLAGS =        \
 libopenthread_cli_a_SOURCES         = \
     cli.cpp                           \
     cli_serial.cpp                    \
+    cli_udp.cpp                       \
     $(NULL)
 
 noinst_HEADERS                      = \
diff --git a/src/cli/cli_udp.hpp b/src/cli/cli_udp.hpp
index 3ff8dcbdc..4e205dd5f 100644
--- a/src/cli/cli_udp.hpp
+++ b/src/cli/cli_udp.hpp
@@ -53,7 +53,7 @@ public:
      * @retval kThreadError_None  Successfully started the server.
      *
      */
-    ThreadError Start(void) final;
+    ThreadError Start(void);
 
     /**
      * This method delivers output to the client.
@@ -64,7 +64,7 @@ public:
      * @retval kThreadError_None  Successfully delivered output the client.
      *
      */
-    ThreadError Output(const char *aBuf, uint16_t aBufLength) final;
+    ThreadError Output(const char *aBuf, uint16_t aBufLength);
 
 private:
     static void HandleUdpReceive(void *aContext, otMessage aMessage, const otMessageInfo *aMessageInfo);