diff --git a/.clang-format b/.clang-format
index 9d699ec9..0fc6f89f 100644
--- a/.clang-format
+++ b/.clang-format
@@ -38,7 +38,7 @@ SpaceInEmptyParentheses: false
 SpacesInAngles: false
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
-Standard: Cpp11
+Standard: Cpp03
 
 SortIncludes: false
 
diff --git a/perf/benchmark_radix_tree.cpp b/perf/benchmark_radix_tree.cpp
index f6d6e7e3..432d535f 100644
--- a/perf/benchmark_radix_tree.cpp
+++ b/perf/benchmark_radix_tree.cpp
@@ -52,7 +52,7 @@ void benchmark_lookup (T &subscriptions_,
                        std::vector<unsigned char *> &queries_)
 {
     using namespace std::chrono;
-    std::vector<duration<long, std::nano>> samples_vec;
+    std::vector<duration<long, std::nano> > samples_vec;
     samples_vec.reserve (samples);
 
     for (std::size_t run = 0; run < warmup_runs; ++run) {