diff --git a/tests/Android.mk b/tests/Android.mk
index 7153383..083bb70 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -65,6 +65,7 @@
     stdlib_test.cpp \
     string_test.cpp \
     stubs_test.cpp \
+    unistd_test.cpp \
 
 test_dynamic_ldflags = -Wl,--export-dynamic -Wl,-u,DlSymTestFunction
 test_dynamic_src_files = \
diff --git a/tests/unistd_test.cpp b/tests/unistd_test.cpp
new file mode 100644
index 0000000..a9dd5d2
--- /dev/null
+++ b/tests/unistd_test.cpp
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <unistd.h>
+
+TEST(unistd, sysconf_SC_MONOTONIC_CLOCK) {
+  ASSERT_GT(sysconf(_SC_MONOTONIC_CLOCK), 0);
+}