diff --git a/src/character/admin.py b/src/character/admin.py
index 2cbcf10..e3e6f6e 100644
--- a/src/character/admin.py
+++ b/src/character/admin.py
@@ -59,7 +59,10 @@ class ProfileAdmin(admin.ModelAdmin):
     search_fields = ["name"]
     inlines = [PathInline]
     fieldsets = [
-        (None, {"fields": ["name", ("magical_strength", "life_dice")]}),
+        (
+            None,
+            {"fields": ["name", ("magical_strength", "life_dice", "mana_max_compute")]},
+        ),
         ("Notes", {"fields": ["notes"]}),
         ("Documentation", {"fields": ["url"]}),
     ]
diff --git a/src/character/management/commands/import_profiles.py b/src/character/management/commands/import_profiles.py
index 787e63e..6be6459 100644
--- a/src/character/management/commands/import_profiles.py
+++ b/src/character/management/commands/import_profiles.py
@@ -25,6 +25,7 @@ class Command(BaseCommand):
         dice = self.get_dice(name)
         magical_strength = self.get_magical_strength()
         notes = self.get_notes(name)
+        mana_max_compute = self.get_mana_max_compute(name)
 
         profile, _ = Profile.objects.update_or_create(
             name=name,
@@ -33,6 +34,7 @@ class Command(BaseCommand):
                 "magical_strength": magical_strength,
                 "notes": notes,
                 "url": url,
+                "mana_max_compute": mana_max_compute,
             },
         )
         self.stdout.write(self.style.SUCCESS(f"Created/updated profile {profile}"))
@@ -74,6 +76,13 @@ class Command(BaseCommand):
         notes = notes.strip()
         return notes
 
+    def get_mana_max_compute(self, name) -> Profile.ManaMax:
+        if name in ["Barde", "Druide", "Forgesort", "Prêtre"]:
+            return Profile.ManaMax.LEVEL
+        elif name in ["Ensorceleur", "Magicien", "Nécromancien"]:
+            return Profile.ManaMax.DOUBLE_LEVEL
+        return Profile.ManaMax.NO_MANA
+
     def setup_selenium(self) -> None:
         options = webdriver.FirefoxOptions()
         options.add_argument("-headless")
diff --git a/src/character/migrations/0016_profile_mana_max_compute.py b/src/character/migrations/0016_profile_mana_max_compute.py
new file mode 100644
index 0000000..e61e7a7
--- /dev/null
+++ b/src/character/migrations/0016_profile_mana_max_compute.py
@@ -0,0 +1,26 @@
+# Generated by Django 4.1.2 on 2022-10-30 21:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("character", "0015_character_recovery_points_remaining"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="profile",
+            name="mana_max_compute",
+            field=models.PositiveSmallIntegerField(
+                choices=[
+                    (0, "Pas de mana"),
+                    (1, "1 x niveau + mod. magique"),
+                    (2, "2 x niveau + mod. magique"),
+                ],
+                default=0,
+                verbose_name="calcul mana max",
+            ),
+        ),
+    ]
diff --git a/src/character/migrations/max_migration.txt b/src/character/migrations/max_migration.txt
index 43cdd14..5e040a1 100644
--- a/src/character/migrations/max_migration.txt
+++ b/src/character/migrations/max_migration.txt
@@ -1 +1 @@
-0015_character_recovery_points_remaining
+0016_profile_mana_max_compute
diff --git a/src/character/models/character.py b/src/character/models/character.py
index 2b71650..1ddee1d 100644
--- a/src/character/models/character.py
+++ b/src/character/models/character.py
@@ -17,6 +17,11 @@ class Profile(DocumentedModel, UniquelyNamedModel, TimeStampedModel, models.Mode
         WISDOM = "SAG", "Sagesse"
         CHARISMA = "CHA", "Charisme"
 
+    class ManaMax(models.IntegerChoices):
+        NO_MANA = 0, "Pas de mana"
+        LEVEL = 1, "1 x niveau + mod. magique"
+        DOUBLE_LEVEL = 2, "2 x niveau + mod. magique"
+
     magical_strength = models.CharField(
         max_length=3,
         choices=MagicalStrength.choices,
@@ -26,6 +31,9 @@ class Profile(DocumentedModel, UniquelyNamedModel, TimeStampedModel, models.Mode
     life_dice = models.PositiveSmallIntegerField(
         choices=Dice.choices, verbose_name="dé de vie"
     )
+    mana_max_compute = models.PositiveSmallIntegerField(
+        choices=ManaMax.choices, verbose_name="calcul mana max", default=ManaMax.NO_MANA
+    )
     notes = models.TextField(blank=True, verbose_name="notes")
 
     class Meta:
@@ -202,16 +210,17 @@ class Character(models.Model):
 
     @property
     def attack_magic(self) -> int:
+        return self.level + self.modifier_magic
+
+    @property
+    def modifier_magic(self) -> int:
         modifier_map = {
             Profile.MagicalStrength.INTELLIGENCE: self.modifier_intelligence,
             Profile.MagicalStrength.WISDOM: self.modifier_wisdom,
             Profile.MagicalStrength.CHARISMA: self.modifier_charisma,
             Profile.MagicalStrength.NONE: 0,
         }
-
-        return self.level + modifier_map.get(
-            Profile.MagicalStrength(self.profile.magical_strength)
-        )
+        return modifier_map.get(Profile.MagicalStrength(self.profile.magical_strength))
 
     @property
     def defense(self) -> int:
@@ -221,7 +230,13 @@ class Character(models.Model):
 
     @property
     def mana_max(self) -> int:
-        return 2 * self.level + self.modifier_intelligence
+        mana_max_compute = self.profile.mana_max_compute
+        if mana_max_compute == Profile.ManaMax.NO_MANA:
+            return 0
+        elif mana_max_compute == Profile.ManaMax.LEVEL:
+            return self.level + self.modifier_intelligence
+        else:
+            return 2 * self.level + self.modifier_intelligence
 
     @property
     def height_m(self) -> float:
diff --git a/src/character/templates/character/view.html b/src/character/templates/character/view.html
index 8345bee..bb63781 100644
--- a/src/character/templates/character/view.html
+++ b/src/character/templates/character/view.html
@@ -152,7 +152,16 @@
                     </tr>
                     <tr>
                         <th scope="row">PM max</th>
-                        <td>{{ character.mana_max }}</td>
+                        <td data-bs-toggle="tooltip"
+                            data-bs-placement="top"
+                            {% if character.profile.mana_max_compute == 1 %}
+                                data-bs-title="{{ character.level }} (niveau) + {{ character.modifier_magic }} (mod. {{ character.profile.magical_strength }})"
+                            {% elif character.profile.mana_max_compute == 2 %}
+                                data-bs-title="2 x {{ character.level }} (niveau) + {{ character.modifier_magic }} (mod. {{ character.profile.magical_strength }})"
+                            {% endif %}
+                        >
+                            {{ character.mana_max }}
+                        </td>
                     </tr>
                     <tr>
                         <th scope="row">