diff --git a/platform/platform.cpp b/platform/platform.cpp
index d1653cd48b..41b0951a5b 100644
--- a/platform/platform.cpp
+++ b/platform/platform.cpp
@@ -145,11 +145,24 @@ string Platform::ReadPathForFile(string const & file, string searchScope) const
   {
     switch (searchScope[i])
     {
-    case 'w': fullPath = base::JoinPath(m_writableDir, file); break;
-    case 'r': fullPath = base::JoinPath(m_resourcesDir, file); break;
-    case 's': fullPath = base::JoinPath(m_settingsDir, file); break;
-    case 'f': fullPath = file; break;
-    default : CHECK(false, ("Unsupported searchScope:", searchScope)); break;
+    case 'w':
+      ASSERT(!m_writableDir.empty(), ());
+      fullPath = base::JoinPath(m_writableDir, file);
+      break;
+    case 'r':
+      ASSERT(!m_resourcesDir.empty(), ());
+      fullPath = base::JoinPath(m_resourcesDir, file);
+      break;
+    case 's':
+      ASSERT(!m_settingsDir.empty(), ());
+      fullPath = base::JoinPath(m_settingsDir, file);
+      break;
+    case 'f':
+      fullPath = file;
+      break;
+    default :
+      CHECK(false, ("Unsupported searchScope:", searchScope));
+      break;
     }
     if (IsFileExistsByFullPath(fullPath))
       return fullPath;
diff --git a/platform/platform.hpp b/platform/platform.hpp
index c26699fbba..b4af4d0a00 100644
--- a/platform/platform.hpp
+++ b/platform/platform.hpp
@@ -7,6 +7,7 @@
 
 #include "coding/reader.hpp"
 
+#include "base/assert.hpp"
 #include "base/exception.hpp"
 #include "base/macros.hpp"
 #include "base/task_loop.hpp"
@@ -130,7 +131,11 @@ public:
   /// @note In case of an error returns an empty std::string.
   static std::string GetCurrentWorkingDirectory() noexcept;
   /// @return always the same writable dir for current user with slash at the end
-  std::string const & WritableDir() const { return m_writableDir; }
+  std::string const & WritableDir() const
+  {
+    ASSERT(!m_writableDir.empty(), ());
+    return m_writableDir;
+  }
   /// Set writable dir — use for testing and linux stuff only
   void SetWritableDirForTests(std::string const & path);
   /// @return full path to file in user's writable directory
@@ -140,7 +145,11 @@ public:
                               std::string searchScope = std::string()) const;
 
   /// @return resource dir (on some platforms it's differ from Writable dir)
-  std::string const & ResourcesDir() const { return m_resourcesDir; }
+  std::string const & ResourcesDir() const
+  {
+    ASSERT(!m_resourcesDir.empty(), ());
+    return m_resourcesDir;
+  }
   /// @note! This function is used in generator_tool and unit tests.
   /// Client app should not replace default resource dir.
   void SetResourceDir(std::string const & path);