diff --git a/cfg_checker/cli/command.py b/cfg_checker/cli/command.py
index 9ac05f3..0a892d8 100644
--- a/cfg_checker/cli/command.py
+++ b/cfg_checker/cli/command.py
@@ -35,11 +35,11 @@
     # check commands
     if not hasattr(args, 'type') or not args.type:
         logger_cli.info("\n# Please, type a command listed above")
-        return 0
+        return 1
     _type = args.type.replace("-", "_") if "-" in args.type else args.type
     if command not in commands:
         logger_cli.info("\n# Please, type a command listed above")
-        return 0
+        return 1
     elif _type not in commands[command]:
         # check type
         logger_cli.info(
@@ -47,7 +47,7 @@
                 command
             )
         )
-        return 0
+        return 1
     else:
         # form function name to call
         _method_name = "do_" + _type
@@ -86,7 +86,7 @@
         args, unknown = my_parser.parse_known_args()
     except TypeError:
         logger_cli.info("\n# Please, check arguments")
-        sys.exit(0)
+        sys.exit(1)
 
     if unknown:
         logger_cli.error(
diff --git a/cfg_checker/cli/network.py b/cfg_checker/cli/network.py
index 5c5a4e2..6d3059e 100644
--- a/cfg_checker/cli/network.py
+++ b/cfg_checker/cli/network.py
@@ -1,4 +1,4 @@
-from command import cli_command
+from .command import cli_command
 
 
 def entrypoint():
diff --git a/cfg_checker/cli/packages.py b/cfg_checker/cli/packages.py
index c44e5bc..b1319a1 100644
--- a/cfg_checker/cli/packages.py
+++ b/cfg_checker/cli/packages.py
@@ -1,4 +1,4 @@
-from command import cli_command
+from .command import cli_command
 
 
 def entrypoint():
diff --git a/cfg_checker/cli/reclass.py b/cfg_checker/cli/reclass.py
index f479a72..652f00a 100644
--- a/cfg_checker/cli/reclass.py
+++ b/cfg_checker/cli/reclass.py
@@ -1,4 +1,4 @@
-from command import cli_command
+from .command import cli_command
 
 
 def entrypoint():