diff --git a/app/forms/forum.py b/app/forms/forum.py
index 30bcd90..fbcf5c4 100644
--- a/app/forms/forum.py
+++ b/app/forms/forum.py
@@ -2,25 +2,45 @@ from flask_wtf import FlaskForm
 from wtforms import StringField, SubmitField, TextAreaField, MultipleFileField
 from wtforms.validators import InputRequired, Length
 import app.utils.validators as vd
+from app.utils.antibot_field import AntibotField
 
 class CommentForm(FlaskForm):
-    message = TextAreaField('Message', validators=[InputRequired()])
-    attachments = MultipleFileField('Pièces-jointes',
-        validators=[vd.file.optional, vd.file.count, vd.file.extension,
-            vd.file.size, vd.file.namelength])
+    message = TextAreaField(
+        'Message',
+        validators=[InputRequired()])
+
+    attachments = MultipleFileField(
+        'Pièces-jointes',
+        validators=[
+            vd.file.optional,
+            vd.file.count,
+            vd.file.extension,
+            vd.file.size,
+            vd.file.namelength
+        ])
+
     submit = SubmitField('Commenter')
 
 
 class AnonymousCommentForm(CommentForm):
-    pseudo = StringField('Pseudo',
+    pseudo = StringField(
+        'Pseudo',
         validators=[InputRequired(), vd.name.valid, vd.name.available])
 
+    ab = AntibotField()
 
 class CommentEditForm(CommentForm):
     # Boolean fields to remove files are added dynamically
-    attachments = MultipleFileField('Ajouter des pièces jointes',
-        validators=[vd.file.optional, vd.file.count, vd.file.extension,
-            vd.file.size, vd.file.namelength])
+    attachments = MultipleFileField(
+        'Ajouter des pièces jointes',
+        validators=[
+            vd.file.optional,
+            vd.file.count,
+            vd.file.extension,
+            vd.file.size,
+            vd.file.namelength
+        ])
+
     submit = SubmitField('Modifier')
 
 
@@ -29,10 +49,12 @@ class AnonymousCommentEditForm(CommentEditForm, AnonymousCommentForm):
 
 
 class TopicCreationForm(CommentForm):
-    title = StringField('Nom du sujet',
+    title = StringField(
+        'Nom du sujet',
         validators=[InputRequired(), Length(min=3, max=128)])
+
     submit = SubmitField('Créer le sujet')
 
 
 class AnonymousTopicCreationForm(TopicCreationForm, AnonymousCommentForm):
-    pass
+    ab = AntibotField()
diff --git a/app/static/css/form.css b/app/static/css/form.css
index 7fe9dfb..bab32f3 100644
--- a/app/static/css/form.css
+++ b/app/static/css/form.css
@@ -102,6 +102,10 @@
 	/*width: 20%;*/
 }
 
+.form input.abfield {
+	display: none;
+}
+
 .form form .msgerror {
 	color: var(--error);
 	font-weight: 400;
diff --git a/app/templates/forum/forum.html b/app/templates/forum/forum.html
index 8a33226..0c6e440 100644
--- a/app/templates/forum/forum.html
+++ b/app/templates/forum/forum.html
@@ -62,6 +62,7 @@
 				<span class="msgerror">{{ error }}</span>
 				{% endfor %}
 			</div>
+			{{ form.ab }}
 			{% endif %}
 
 			<div>
diff --git a/app/templates/forum/topic.html b/app/templates/forum/topic.html
index 5853b28..712ac86 100644
--- a/app/templates/forum/topic.html
+++ b/app/templates/forum/topic.html
@@ -33,11 +33,14 @@
             {{ form.hidden_tag() }}
 
             {% if form.pseudo %}
+            <div>
                 {{ form.pseudo.label }}
                 {{ form.pseudo }}
                 {% for error in form.pseudo.errors %}
                 <span class="msgerror">{{ error }}</span>
                 {% endfor %}
+            {{ form.ab }}
+            </div>
             {% endif %}
 
             {{ widget_editor.text_editor(form.message, label=False) }}
diff --git a/app/utils/antibot_field.py b/app/utils/antibot_field.py
new file mode 100644
index 0000000..4ceedf3
--- /dev/null
+++ b/app/utils/antibot_field.py
@@ -0,0 +1,20 @@
+from wtforms.fields.html5 import EmailField
+from wtforms.validators import Optional, ValidationError
+
+def antibot_validator(form, field):
+    if field.data:
+        raise ValidationError('Bas les pattes!')
+    return True
+
+class AntibotField(EmailField):
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(
+            "L'adresse email",
+            *args,
+            validators=[Optional(), antibot_validator],
+            **kwargs)
+
+    def __call__(self, *args, **kwargs):
+        return super().__call__(*args, **kwargs,
+            class_="abfield", autocomplete="no", tabindex="-1")