diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8613258..867562b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,6 +7,7 @@ py37:
   stage: test
   image: python:3.7-alpine
   before_script:
+    - apk add --no-cache gettext
     - pip install tox
   script: tox -e py3
 
@@ -14,6 +15,7 @@ py38:
   stage: test
   image: python:3.8-alpine
   before_script:
+    - apk add --no-cache gettext
     - pip install tox
   script: tox -e py3
 
@@ -22,6 +24,7 @@ py39:
   stage: test
   image: python:3.9-alpine
   before_script:
+    - apk add --no-cache gettext
     - pip install tox
   script: tox -e py3
 
@@ -29,6 +32,7 @@ linters:
   stage: quality-assurance
   image: python:3-alpine
   before_script:
+    - apk add --no-cache gettext
     - pip install tox
   script: tox -e linters
   allow_failure: true
@@ -37,7 +41,7 @@ build-deb:
   image: debian:buster-slim
   stage: build
   before_script:
-    - apt-get update && apt-get -y --no-install-recommends install build-essential debmake dh-python debhelper python3-all python3-setuptools
+    - apt-get update && apt-get -y --no-install-recommends install build-essential debmake dh-python debhelper gettext python3-all python3-setuptools
   script:
     - dpkg-buildpackage
     - mkdir build && cp ../*.deb build/
diff --git a/squirrelbattle/tests/game_test.py b/squirrelbattle/tests/game_test.py
index 8f5b1c1..9c950d6 100644
--- a/squirrelbattle/tests/game_test.py
+++ b/squirrelbattle/tests/game_test.py
@@ -4,18 +4,16 @@
 import os
 import unittest
 
-from squirrelbattle.resources import ResourceManager
-
-from squirrelbattle.enums import DisplayActions
-
-from squirrelbattle.bootstrap import Bootstrap
-from squirrelbattle.display.display import Display
-from squirrelbattle.display.display_manager import DisplayManager
-from squirrelbattle.entities.player import Player
-from squirrelbattle.game import Game, KeyValues, GameMode
-from squirrelbattle.menus import MainMenuValues
-from squirrelbattle.settings import Settings
-from squirrelbattle.translations import gettext as _
+from ..bootstrap import Bootstrap
+from ..display.display import Display
+from ..display.display_manager import DisplayManager
+from ..entities.player import Player
+from ..enums import DisplayActions
+from ..game import Game, KeyValues, GameMode
+from ..menus import MainMenuValues
+from ..resources import ResourceManager
+from ..settings import Settings
+from ..translations import gettext as _, Translator
 
 
 class TestGame(unittest.TestCase):
@@ -277,6 +275,8 @@ class TestGame(unittest.TestCase):
         self.assertEqual(self.game.settings.TEXTURE_PACK, "ascii")
 
         # Change language
+        Translator.compilemessages()
+        Translator.refresh_translations()
         self.game.settings.LOCALE = "en"
         self.game.handle_key_pressed(KeyValues.DOWN)
         self.game.handle_key_pressed(KeyValues.ENTER)
diff --git a/squirrelbattle/tests/translations_test.py b/squirrelbattle/tests/translations_test.py
index 742edea..6c18840 100644
--- a/squirrelbattle/tests/translations_test.py
+++ b/squirrelbattle/tests/translations_test.py
@@ -5,6 +5,8 @@ from squirrelbattle.translations import gettext as _, Translator
 
 class TestTranslations(unittest.TestCase):
     def setUp(self) -> None:
+        Translator.compilemessages()
+        Translator.refresh_translations()
         Translator.setlocale("fr")
 
     def test_main_menu_translation(self) -> None:
diff --git a/squirrelbattle/translations.py b/squirrelbattle/translations.py
index dfd3cf3..cd5b7fc 100644
--- a/squirrelbattle/translations.py
+++ b/squirrelbattle/translations.py
@@ -18,15 +18,20 @@ class Translator:
     locale: str = "en"
     translators: dict = {}
 
-    for language in SUPPORTED_LOCALES:
-        dir = Path(__file__).parent / "locale" / language / "LC_MESSAGES"
-        dir.mkdir(parents=True) if not dir.is_dir() else None
-        if os.path.isfile(dir / "squirrelbattle.mo"):
-            translators[language] = gt.translation(
-                "squirrelbattle",
-                localedir=Path(__file__).parent / "locale",
-                languages=[language],
-            )
+    @classmethod
+    def refresh_translations(cls) -> None:
+        """
+        Load compiled translations.
+        """
+        for language in cls.SUPPORTED_LOCALES:
+            rep = Path(__file__).parent / "locale" / language / "LC_MESSAGES"
+            rep.mkdir(parents=True) if not rep.is_dir() else None
+            if os.path.isfile(rep / "squirrelbattle.mo"):
+                cls.translators[language] = gt.translation(
+                    "squirrelbattle",
+                    localedir=Path(__file__).parent / "locale",
+                    languages=[language],
+                )
 
     @classmethod
     def setlocale(cls, lang: str) -> None:
@@ -40,10 +45,13 @@ class Translator:
 
     @classmethod
     def get_translator(cls) -> Any:
-        return cls.translators.get(cls.locale)
+        return cls.translators.get(cls.locale, gt.NullTranslations())
 
     @classmethod
     def makemessages(cls) -> None:  # pragma: no cover
+        """
+        Analyse all strings in the project and extract them.
+        """
         for language in cls.SUPPORTED_LOCALES:
             file_name = Path(__file__).parent / "locale" / language \
                 / "LC_MESSAGES" / "squirrelbattle.po"
@@ -61,10 +69,13 @@ class Translator:
             if file_name.is_file():
                 args.append("--join-existing")
             print(f"Make {language} messages...")
-            subprocess.Popen(args, stdin=find.stdout)
+            subprocess.Popen(args, stdin=find.stdout).wait()
 
     @classmethod
-    def compilemessages(cls) -> None:  # pragma: no cover
+    def compilemessages(cls) -> None:
+        """
+        Compile translation messages from source files.
+        """
         for language in cls.SUPPORTED_LOCALES:
             args = ["msgfmt", "--check-format",
                     "-o", Path(__file__).parent / "locale" / language
@@ -72,7 +83,7 @@ class Translator:
                     Path(__file__).parent / "locale" / language
                     / "LC_MESSAGES" / "squirrelbattle.po"]
             print(f"Compiling {language} messages...")
-            subprocess.Popen(args)
+            subprocess.Popen(args).wait()
 
 
 def gettext(message: str) -> str:
@@ -80,3 +91,6 @@ def gettext(message: str) -> str:
     Translate a message.
     """
     return Translator.get_translator().gettext(message)
+
+
+Translator.refresh_translations()