diff --git a/startop/view_compiler/main.cc b/startop/view_compiler/main.cc
index 55bfdc7..609bcf3 100644
--- a/startop/view_compiler/main.cc
+++ b/startop/view_compiler/main.cc
@@ -32,6 +32,7 @@
 namespace {
 
 using namespace tinyxml2;
+using namespace startop::util;
 using std::string;
 
 constexpr char kStdoutFilename[]{"stdout"};
diff --git a/startop/view_compiler/util.cc b/startop/view_compiler/util.cc
index 69df41d..a0637e6 100644
--- a/startop/view_compiler/util.cc
+++ b/startop/view_compiler/util.cc
@@ -18,6 +18,9 @@
 
 using std::string;
 
+namespace startop {
+namespace util {
+
 // TODO: see if we can borrow this from somewhere else, like aapt2.
 string FindLayoutNameFromFilename(const string& filename) {
   size_t start = filename.rfind("/");
@@ -30,3 +33,6 @@
 
   return filename.substr(start, end - start);
 }
+
+}  // namespace util
+}  // namespace startop
diff --git a/startop/view_compiler/util.h b/startop/view_compiler/util.h
index 03e0939..0176175 100644
--- a/startop/view_compiler/util.h
+++ b/startop/view_compiler/util.h
@@ -13,11 +13,17 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#ifndef UTIL_H_
-#define UTIL_H_
+#ifndef VIEW_COMPILER_UTIL_H_
+#define VIEW_COMPILER_UTIL_H_
 
 #include <string>
 
+namespace startop {
+namespace util {
+
 std::string FindLayoutNameFromFilename(const std::string& filename);
 
-#endif  // UTIL_H_
+}  // namespace util
+}  // namespace startop
+
+#endif  // VIEW_COMPILER_UTIL_H_
diff --git a/startop/view_compiler/util_test.cc b/startop/view_compiler/util_test.cc
index d1540d3..50682a0 100644
--- a/startop/view_compiler/util_test.cc
+++ b/startop/view_compiler/util_test.cc
@@ -20,9 +20,15 @@
 
 using std::string;
 
+namespace startop {
+namespace util {
+
 TEST(UtilTest, FindLayoutNameFromFilename) {
-  EXPECT_EQ("bar", ::FindLayoutNameFromFilename("foo/bar.xml"));
-  EXPECT_EQ("bar", ::FindLayoutNameFromFilename("bar.xml"));
-  EXPECT_EQ("bar", ::FindLayoutNameFromFilename("./foo/bar.xml"));
-  EXPECT_EQ("bar", ::FindLayoutNameFromFilename("/foo/bar.xml"));
+  EXPECT_EQ("bar", startop::util::FindLayoutNameFromFilename("foo/bar.xml"));
+  EXPECT_EQ("bar", startop::util::FindLayoutNameFromFilename("bar.xml"));
+  EXPECT_EQ("bar", startop::util::FindLayoutNameFromFilename("./foo/bar.xml"));
+  EXPECT_EQ("bar", startop::util::FindLayoutNameFromFilename("/foo/bar.xml"));
 }
+
+}  // namespace util
+}  // namespace startop