diff --git a/mojo/edk/embedder/embedder_unittest.cc b/mojo/edk/embedder/embedder_unittest.cc
index 4507328..f74b9a2 100644
--- a/mojo/edk/embedder/embedder_unittest.cc
+++ b/mojo/edk/embedder/embedder_unittest.cc
@@ -132,7 +132,7 @@
                             &num_ports, MOJO_READ_MESSAGE_FLAG_NONE));
   EXPECT_EQ(write_size, num_bytes);
   EXPECT_STREQ(kHello, read_buffer);
-  EXPECT_EQ(1, num_ports);
+  EXPECT_EQ(1u, num_ports);
 
 
   client_mp2 = ports[0];
@@ -147,7 +147,7 @@
                             &num_ports, MOJO_READ_MESSAGE_FLAG_NONE));
   EXPECT_EQ(write_size, num_bytes);
   EXPECT_STREQ(kHello, read_buffer);
-  EXPECT_EQ(1, num_ports);
+  EXPECT_EQ(1u, num_ports);
 
 
   EXPECT_EQ(MOJO_RESULT_OK, MojoClose(server_mp3));
diff --git a/mojo/edk/system/data_pipe_unittest.cc b/mojo/edk/system/data_pipe_unittest.cc
index edf7bcb..1fdb02d 100644
--- a/mojo/edk/system/data_pipe_unittest.cc
+++ b/mojo/edk/system/data_pipe_unittest.cc
@@ -22,9 +22,6 @@
 namespace edk {
 namespace {
 
-const MojoHandleSignals kSignalAll = MOJO_HANDLE_SIGNAL_READABLE |
-                                     MOJO_HANDLE_SIGNAL_WRITABLE |
-                                     MOJO_HANDLE_SIGNAL_PEER_CLOSED;
 const uint32_t kSizeOfOptions =
     static_cast<uint32_t>(sizeof(MojoCreateDataPipeOptions));