diff --git a/coding/file_reader.cpp b/coding/file_reader.cpp
index 3b2fd0ff4d..5e911632d6 100644
--- a/coding/file_reader.cpp
+++ b/coding/file_reader.cpp
@@ -15,9 +15,6 @@ using namespace std;
 
 namespace
 {
-uint32_t const kDefaultLogPageSize = 10;
-uint32_t const kDefaultLogPageCount = 4;
-
 class FileDataWithCachedSize : public my::FileData
 {
   using base_t = my::FileData;
@@ -35,6 +32,11 @@ private:
 };
 }  // namespace
 
+// static
+uint32_t const FileReader::kDefaultLogPageSize = 10;
+// static
+uint32_t const FileReader::kDefaultLogPageCount = 4;
+
 class FileReader::FileReaderData
 {
 public:
diff --git a/coding/file_reader.hpp b/coding/file_reader.hpp
index 0a7711b1d2..d4fd54c536 100644
--- a/coding/file_reader.hpp
+++ b/coding/file_reader.hpp
@@ -15,6 +15,9 @@
 class FileReader : public ModelReader
 {
 public:
+  static uint32_t const kDefaultLogPageSize;
+  static uint32_t const kDefaultLogPageCount;
+
   explicit FileReader(std::string const & fileName);
   FileReader(std::string const & fileName, uint32_t logPageSize, uint32_t logPageCount);
 
diff --git a/coding/zip_reader.hpp b/coding/zip_reader.hpp
index 7e6360ffbe..904a778e31 100644
--- a/coding/zip_reader.hpp
+++ b/coding/zip_reader.hpp
@@ -34,9 +34,9 @@ public:
   DECLARE_EXCEPTION(LocateZipException, OpenException);
   DECLARE_EXCEPTION(InvalidZipException, OpenException);
 
-  /// @param[in] logPageSize, logPageCount default values are equal with FileReader constructor.
   ZipFileReader(string const & container, string const & file,
-                uint32_t logPageSize = 10, uint32_t logPageCount = 4);
+                uint32_t logPageSize = FileReader::kDefaultLogPageSize,
+                uint32_t logPageCount = FileReader::kDefaultLogPageCount);
 
   /// @note Size() returns compressed file size inside zip
   uint64_t UncompressedSize() const { return m_uncompressedFileSize; }