1 files changed, 2 insertions, 1 deletions
diff --git a/base/containers/small_map_unittest.cc b/base/containers/small_map_unittest.cc
index d1c8680..c90a303 100644
--- a/base/containers/small_map_unittest.cc
+++ b/base/containers/small_map_unittest.cc
@@ -424,7 +424,8 @@ namespace {
 class hash_map_add_item : public hash_map<int, int> {
  public:
   hash_map_add_item() : hash_map<int, int>() {}
-  hash_map_add_item(const std::pair<int, int>& item) : hash_map<int, int>() {
+  explicit hash_map_add_item(const std::pair<int, int>& item)
+      : hash_map<int, int>() {
     insert(item);
   }
 };