diff --git a/ugc/serdes.hpp b/ugc/serdes.hpp
index 79c0698cec..f799403dcf 100644
--- a/ugc/serdes.hpp
+++ b/ugc/serdes.hpp
@@ -49,7 +49,7 @@ public:
   template <typename T>
   void operator()(vector<T> const & vs)
   {
-    SerVarUint(vs.size());
+    SerVarUint(static_cast<uint32_t>(vs.size()));
     for (auto const & v : vs)
       (*this)(v);
   }
@@ -84,12 +84,12 @@ public:
     (*this)(text.m_text);
   }
 
-  void operator()(Review::Sentiment sentiment)
+  void operator()(Sentiment sentiment)
   {
     switch (sentiment)
     {
-    case Review::Sentiment::Negative: return (*this)(static_cast<uint8_t>(0));
-    case Review::Sentiment::Positive: return (*this)(static_cast<uint8_t>(1));
+    case Sentiment::Negative: return (*this)(static_cast<uint8_t>(0));
+    case Sentiment::Positive: return (*this)(static_cast<uint8_t>(1));
     }
   }
 
@@ -160,7 +160,7 @@ public:
   template <typename T>
   void operator()(vector<T> & vs)
   {
-    auto const size = DesVarUint<size_t>();
+    auto const size = DesVarUint<uint32_t>();
     vs.resize(size);
     for (auto & v : vs)
       (*this)(v);
@@ -190,14 +190,14 @@ public:
     (*this)(text.m_text);
   }
 
-  void operator()(Review::Sentiment & sentiment)
+  void operator()(Sentiment & sentiment)
   {
     uint8_t s = 0;
     (*this)(s);
     switch (s)
     {
-    case 0: sentiment = Review::Sentiment::Negative; break;
-    case 1: sentiment = Review::Sentiment::Positive; break;
+    case 0: sentiment = Sentiment::Negative; break;
+    case 1: sentiment = Sentiment::Positive; break;
     default: CHECK(false, ("Can't parse sentiment from:", static_cast<int>(s))); break;
     }
   }
diff --git a/ugc/types.hpp b/ugc/types.hpp
index 145038e758..1fffe74d07 100644
--- a/ugc/types.hpp
+++ b/ugc/types.hpp
@@ -16,6 +16,22 @@
 namespace ugc
 {
 using TranslationKey = std::string;
+using Time = std::chrono::time_point<std::chrono::system_clock>;
+
+enum class Sentiment
+{
+  Positive,
+  Negative
+};
+
+inline std::string DebugPrint(Sentiment const & sentiment)
+{
+  switch (sentiment)
+  {
+  case Sentiment::Positive: return "Positive";
+  case Sentiment::Negative: return "Negative";
+  }
+}
 
 struct RatingRecord
 {
@@ -54,7 +70,7 @@ struct Rating
   friend std::string DebugPrint(Rating const & rating)
   {
     std::ostringstream os;
-    os << "Rating [ ratings:" << DebugPrint(rating.m_ratings) << ", aggValue:" << rating.m_aggValue
+    os << "Rating [ ratings:" << ::DebugPrint(rating.m_ratings) << ", aggValue:" << rating.m_aggValue
        << " ]";
     return os.str();
   }
@@ -123,13 +139,6 @@ struct Text
 struct Review
 {
   using ReviewId = uint32_t;
-  using Time = std::chrono::time_point<std::chrono::system_clock>;
-
-  enum class Sentiment
-  {
-    Positive,
-    Negative
-  };
 
   Review() = default;
   Review(ReviewId id, Text const & text, Author const & author, float const rating,
@@ -156,15 +165,6 @@ struct Review
     m_time = Time(hours);
   }
 
-  friend std::string DebugPrint(Sentiment const sentiment)
-  {
-    switch (sentiment)
-    {
-    case Sentiment::Positive: return "Positive";
-    case Sentiment::Negative: return "Negative";
-    }
-  }
-
   friend std::string DebugPrint(Review const & review)
   {
     std::ostringstream os;
@@ -231,8 +231,8 @@ struct UGC
     std::ostringstream os;
     os << "UGC [ ";
     os << "rating:" << DebugPrint(ugc.m_rating) << ", ";
-    os << "reviews:" << DebugPrint(ugc.m_reviews) << ", ";
-    os << "attributes:" << DebugPrint(ugc.m_attributes) << " ]";
+    os << "reviews:" << ::DebugPrint(ugc.m_reviews) << ", ";
+    os << "attributes:" << ::DebugPrint(ugc.m_attributes) << " ]";
     return os.str();
   }
 
@@ -243,26 +243,21 @@ struct UGC
 
 struct ReviewFeedback
 {
-  ReviewFeedback(bool const evaluation,
-                 std::chrono::time_point<std::chrono::system_clock> const time)
-    : m_evaluation(evaluation), m_time(time)
+  ReviewFeedback(Sentiment const sentiment, Time const & time)
+    : m_sentiment(sentiment), m_time(time)
   {
   }
 
-  bool m_evaluation;
-  std::chrono::time_point<std::chrono::system_clock> m_time;
+  Sentiment m_sentiment;
+  Time m_time;
 };
 
 struct ReviewAbuse
 {
-  ReviewAbuse(std::string const & reason,
-              std::chrono::time_point<std::chrono::system_clock> const & time)
-    : m_reason(reason), m_time(time)
-  {
-  }
+  ReviewAbuse(std::string const & reason, Time const & time) : m_reason(reason), m_time(time) {}
 
   std::string m_reason;
-  std::chrono::time_point<std::chrono::system_clock> m_time;
+  Time m_time;
 };
 
 struct UGCUpdate
diff --git a/ugc/ugc.pro b/ugc/ugc.pro
index c90196970c..3bcf6703e4 100644
--- a/ugc/ugc.pro
+++ b/ugc/ugc.pro
@@ -10,6 +10,7 @@ include($$ROOT_DIR/common.pri)
 
 HEADERS += \
     api.hpp \
+    serdes.hpp \
     types.hpp \
 
 SOURCES += \
diff --git a/ugc/ugc_tests/serdes_tests.cpp b/ugc/ugc_tests/serdes_tests.cpp
index 5e13420555..a38d0016a6 100644
--- a/ugc/ugc_tests/serdes_tests.cpp
+++ b/ugc/ugc_tests/serdes_tests.cpp
@@ -44,12 +44,11 @@ UGC GetTestUGC()
   vector<Review> reviews;
   reviews.emplace_back(20 /* id */, Text("Damn good coffee", StringUtf8Multilang::kEnglishCode),
                        Author(UID(987654321 /* hi */, 123456789 /* lo */), "Cole"),
-                       5.0 /* rating */, Review::Sentiment::Positive,
-                       Review::Time(FromDays(10)));
+                       5.0 /* rating */, Sentiment::Positive, Time(FromDays(10)));
   reviews.emplace_back(67812 /* id */,
                        Text("Clean place, reasonably priced", StringUtf8Multilang::kDefaultCode),
                        Author(UID(0 /* hi */, 315 /* lo */), "Cooper"), 5.0 /* rating */,
-                       Review::Sentiment::Positive, Review::Time(FromDays(1)));
+                       Sentiment::Positive, Time(FromDays(1)));
 
   vector<Attribute> attributes;
   attributes.emplace_back("best-drink", "Coffee");