diff --git a/benchmarks/property_benchmark.cpp b/benchmarks/property_benchmark.cpp
index 0b0c47f..f330d7e 100644
--- a/benchmarks/property_benchmark.cpp
+++ b/benchmarks/property_benchmark.cpp
@@ -183,3 +183,29 @@
     delete[] pinfo;
 }
 BENCHMARK(BM_property_read)->TEST_NUM_PROPS;
+
+static void BM_property_serial(int iters, int nprops)
+{
+    StopBenchmarkTiming();
+
+    LocalPropertyTestState pa(nprops);
+
+    if (!pa.valid)
+        return;
+
+    srandom(iters * nprops);
+    const prop_info** pinfo = new const prop_info*[iters];
+
+    for (int i = 0; i < iters; i++) {
+        pinfo[i] = __system_property_find(pa.names[random() % nprops]);
+    }
+
+    StartBenchmarkTiming();
+    for (int i = 0; i < iters; i++) {
+        __system_property_serial(pinfo[i]);
+    }
+    StopBenchmarkTiming();
+
+    delete[] pinfo;
+}
+BENCHMARK(BM_property_serial)->TEST_NUM_PROPS;
diff --git a/libc/tools/zoneinfo/update-tzdata.py b/libc/tools/zoneinfo/update-tzdata.py
index 3dcb210..6b69a5a 100755
--- a/libc/tools/zoneinfo/update-tzdata.py
+++ b/libc/tools/zoneinfo/update-tzdata.py
@@ -31,8 +31,8 @@
 print 'Found bionic in %s ...' % bionic_dir
 
 # Find the icu4c directory.
-icu_dir = os.path.realpath('%s/../external/icu4c' % bionic_dir)
-CheckDirExists(icu_dir, 'external/icu4c')
+icu_dir = os.path.realpath('%s/../external/icu/icu4c/source' % bionic_dir)
+CheckDirExists(icu_dir, 'external/icu/icu4c/source')
 print 'Found icu in %s ...' % icu_dir