diff --git a/generator/statistics.cpp b/generator/statistics.cpp
index 298bc07c6f..5771d8f309 100644
--- a/generator/statistics.cpp
+++ b/generator/statistics.cpp
@@ -118,7 +118,10 @@ namespace stats
     os << prefix << ": size = " << info.m_size << "; count = " << info.m_count;
 
     if (measurements)
-      os << "; length = " << uint64_t(info.m_length) << " m; area = " << uint64_t(info.m_area) << " m²";
+    {
+      os << "; length = " << static_cast<uint64_t>(info.m_length)
+         << " m; area = " << static_cast<uint64_t>(info.m_area) << " m²";
+    }
 
     os << "; names = " << info.m_names << '\n';
   }
diff --git a/generator/utils.cpp b/generator/utils.cpp
index 183494eb18..30153e1f39 100644
--- a/generator/utils.cpp
+++ b/generator/utils.cpp
@@ -261,5 +261,4 @@ std::ofstream OfstreamWithExceptions(std::string const & name)
   f.open(name);
   return f;
 }
-
 }  // namespace generator
diff --git a/tools/python/maps_generator/generator/settings.py b/tools/python/maps_generator/generator/settings.py
index 2d96477804..d3d77c8852 100644
--- a/tools/python/maps_generator/generator/settings.py
+++ b/tools/python/maps_generator/generator/settings.py
@@ -8,7 +8,7 @@ from pathlib import Path
 from typing import Any
 from typing import AnyStr
 
-from maps_generator.utils.md5 import md5
+from maps_generator.utils.md5 import md5_ext
 from maps_generator.utils.system import total_virtual_memory
 
 parser = argparse.ArgumentParser(add_help=False)
@@ -68,7 +68,7 @@ class CfgReader:
 
 
 DEFAULT_PLANET_URL = "https://planet.openstreetmap.org/pbf/planet-latest.osm.pbf"
-DEFAULT_PLANET_MD5_URL = md5(DEFAULT_PLANET_URL)
+DEFAULT_PLANET_MD5_URL = md5_ext(DEFAULT_PLANET_URL)
 
 # Main section:
 # If DEBUG is True, a little special planet is downloaded.
@@ -136,7 +136,7 @@ PLANET_COASTS_RAWGEOM_URL = os.path.join(PLANET_COASTS_URL, "latest_coasts.rawge
 
 if DEBUG:
     PLANET_URL = "http://osmz.ru/mwm/islands/islands.o5m"
-    PLANET_MD5_URL = "https://cloud.mail.ru/public/5v2F/f7cSaEXBC"
+    PLANET_MD5_URL = "https://cloclo10.cldmail.ru/2n5jWJm11RtdLYm5QFYM/G/QAsr/24zvN9Gf8"
 
 # Common:
 THREADS_COUNT = multiprocessing.cpu_count()
@@ -280,4 +280,4 @@ def init(default_settings_path: AnyStr):
 
     if DEBUG:
         PLANET_URL = "http://osmz.ru/mwm/islands/islands.o5m"
-        PLANET_MD5_URL = "https://cloud.mail.ru/public/5v2F/f7cSaEXBC"
+        PLANET_MD5_URL = "https://cloclo10.cldmail.ru/2n5jWJm11RtdLYm5QFYM/G/QAsr/24zvN9Gf8"
diff --git a/tools/python/maps_generator/generator/steps.py b/tools/python/maps_generator/generator/steps.py
index 1b86954462..3e1761a792 100644
--- a/tools/python/maps_generator/generator/steps.py
+++ b/tools/python/maps_generator/generator/steps.py
@@ -2,11 +2,11 @@
 This file contains basic api for generator_tool and osm tools to generate maps.
 """
 import functools
+import json
 import logging
 import os
 import shutil
 import subprocess
-import json
 from typing import AnyStr
 
 from maps_generator.generator import settings
@@ -15,6 +15,7 @@ from maps_generator.generator.env import PathProvider
 from maps_generator.generator.env import WORLDS_NAMES
 from maps_generator.generator.env import WORLD_NAME
 from maps_generator.generator.env import get_all_countries_list
+from maps_generator.generator.exceptions import ValidationError
 from maps_generator.generator.gen_tool import run_gen_tool
 from maps_generator.generator.osmtools import osmconvert
 from maps_generator.generator.osmtools import osmupdate
@@ -22,7 +23,7 @@ from maps_generator.generator.statistics import make_stats
 from maps_generator.utils.file import download_files
 from maps_generator.utils.file import is_verified
 from maps_generator.utils.file import symlink_force
-from maps_generator.utils.md5 import md5
+from maps_generator.utils.md5 import md5_ext
 from maps_generator.utils.md5 import write_md5sum
 
 logger = logging.getLogger("maps_generator")
@@ -46,7 +47,7 @@ def convert_planet(
     error=subprocess.DEVNULL,
 ):
     osmconvert(tool, in_planet, out_planet, output=output, error=error)
-    write_md5sum(out_planet, md5(out_planet))
+    write_md5sum(out_planet, md5_ext(out_planet))
 
 
 def step_download_and_convert_planet(env: Env, force_download: bool, **kwargs):
@@ -54,11 +55,14 @@ def step_download_and_convert_planet(env: Env, force_download: bool, **kwargs):
         download_files(
             {
                 settings.PLANET_URL: env.paths.planet_osm_pbf,
-                settings.PLANET_MD5_URL: md5(env.paths.planet_osm_pbf),
+                settings.PLANET_MD5_URL: md5_ext(env.paths.planet_osm_pbf),
             },
             env.force_download_files,
         )
 
+        if not is_verified(env.paths.planet_osm_pbf):
+            raise ValidationError(f"Wrong md5 sum for {env.paths.planet_osm_pbf}.")
+
     convert_planet(
         env[settings.OSM_TOOL_CONVERT],
         env.paths.planet_osm_pbf,
@@ -67,7 +71,7 @@ def step_download_and_convert_planet(env: Env, force_download: bool, **kwargs):
         error=env.get_subprocess_out(),
     )
     os.remove(env.paths.planet_osm_pbf)
-    os.remove(md5(env.paths.planet_osm_pbf))
+    os.remove(md5_ext(env.paths.planet_osm_pbf))
 
 
 def step_update_planet(env: Env, **kwargs):
@@ -82,7 +86,7 @@ def step_update_planet(env: Env, **kwargs):
     )
     os.remove(env.paths.planet_o5m)
     os.rename(tmp, env.paths.planet_o5m)
-    write_md5sum(env.paths.planet_o5m, md5(env.paths.planet_o5m))
+    write_md5sum(env.paths.planet_o5m, md5_ext(env.paths.planet_o5m))
 
 
 def step_preprocess(env: Env, **kwargs):
diff --git a/tools/python/maps_generator/utils/file.py b/tools/python/maps_generator/utils/file.py
index 68e45404cf..eec4fd4ced 100644
--- a/tools/python/maps_generator/utils/file.py
+++ b/tools/python/maps_generator/utils/file.py
@@ -12,7 +12,7 @@ from typing import Dict
 from typing import Optional
 
 from maps_generator.utils.md5 import check_md5
-from maps_generator.utils.md5 import md5
+from maps_generator.utils.md5 import md5_ext
 
 logger = logging.getLogger("maps_generator")
 
@@ -56,11 +56,11 @@ def download_files(url_to_path: Dict[AnyStr, AnyStr], download_if_exists: bool =
 
 
 def is_exists_file_and_md5(name: AnyStr) -> bool:
-    return os.path.isfile(name) and os.path.isfile(md5(name))
+    return os.path.isfile(name) and os.path.isfile(md5_ext(name))
 
 
 def is_verified(name: AnyStr) -> bool:
-    return is_exists_file_and_md5(name) and check_md5(name, md5(name))
+    return is_exists_file_and_md5(name) and check_md5(name, md5_ext(name))
 
 
 def copy_overwrite(from_path: AnyStr, to_path: AnyStr):
diff --git a/tools/python/maps_generator/utils/md5.py b/tools/python/maps_generator/utils/md5.py
index bdb09e3247..20f47acf0c 100644
--- a/tools/python/maps_generator/utils/md5.py
+++ b/tools/python/maps_generator/utils/md5.py
@@ -27,5 +27,5 @@ def check_md5(fname, name):
     return False
 
 
-def md5(name):
+def md5_ext(name):
     return f"{name}.md5"