diff --git a/verse/forms/registerform.py b/verse/forms/registerform.py
index cfedac9..7a8d1b1 100644
--- a/verse/forms/registerform.py
+++ b/verse/forms/registerform.py
@@ -6,12 +6,17 @@ from wtforms import (
 )
 
 from wtforms import validators
-from wtforms.validators import Length, Email, EqualTo
+from wtforms.validators import Length, Email, EqualTo, ValidationError
 from flask_wtf import FlaskForm
 
 
 class RegisterForm(FlaskForm):
     """Register for distribusi-verse form class"""
+
+    def hremail(form, field):
+        if not field.data.endswith("@hr.nl"):
+            raise ValidationError("Only HRO accounts are allowed.")
+
     username = StringField(
         "Username:",
         validators=[validators.InputRequired(), Length(3, 150)],
@@ -19,12 +24,19 @@ class RegisterForm(FlaskForm):
 
     email = StringField(
         "Email address:",
-        validators=[validators.InputRequired(), Email(), Length(6, 64)],
+        validators=[
+            validators.InputRequired(),
+            Email(),
+            Length(6, 64),
+            hremail,
+        ]
     )
+
     password = PasswordField(
         "New password:",
         validators=[validators.InputRequired(), Length(12, 72)],
     )
+
     confirmpassword = PasswordField(
         "Confirm your password:",
         validators=[
diff --git a/verse/templates/help.html b/verse/templates/help.html
index 61db4e3..cadd573 100644
--- a/verse/templates/help.html
+++ b/verse/templates/help.html
@@ -70,7 +70,7 @@ the following html in your distribusi page:</p>
 &lt;/div&gt;</pre>
 <p>The encapsulating <strong>div</strong> tag gets an id that is the same as the
 <em>file name.</em> The <strong>img</strong> tag gets a class attribute <em>image</em>
-This is handy for styling your files with css (See 5.)</p>
+This is handy for styling your files with CSS (See 5.)</p>
 	<hr>
 	<h3>3. Folders become links and pages</h3>
 	<p>When you make your zipfile, this zipfile can contain folders with more
@@ -83,7 +83,7 @@ same style. </p>
 &lt;/div&gt;</pre>
 <p>The encapsulating <strong>div</strong> tag gets an id
 <em>folder.</em> and a class attribute <em>dir</em>
-This is handy for styling your files with css (See 5.)</p>
+This is handy for styling your files with CSS (See 5.)</p>
 <p>the anchor <em>(a)</em> tag will get an href attribute pointing to the
 subfolder</p>
 	<hr>
@@ -100,16 +100,16 @@ add simple text elements to their pages.</p>
 &lt;/div&gt;</pre>
 <p>The encapsulating <strong>div</strong> tag gets an id that is the same as the
 <em>file name.</em> and a class attribute <em>plain</em>
-This is handy for styling your files with css (See 5.)</p>
+This is handy for styling your files with CSS (See 5.)</p>
 	<hr>
-	<h3>5. Use Css to style your page</h3>
+	<h3>5. Use CSS to style your page</h3>
 	<p>Distribusi offers almost full support for styling your page with CSS.
 Because all content is auto generated your CSS will be placed in a
 style tag in the head of each HTML file.</p>
 <p>Distrbusi-verse allows its users to skip this step by just selecting a basic
 theme or by selecting one of the themes other users have made <em>public.</em>
 <p>Alternatively a user can opt to make their own custom theme, either in a
-simple online editor or by uploading their own Css file.</p>
+simple online editor or by uploading their own CSS file.</p>
 	<hr>
 </div>
 {% endblock %}