diff --git a/ordr3/models.py b/ordr3/models.py
index e57d036..0e462c0 100644
--- a/ordr3/models.py
+++ b/ordr3/models.py
@@ -161,6 +161,9 @@ class Vendor(Model):
         self.term = term
         self.name = name
 
+    def __repr__(self):
+        return f"<ordr3.models.Vendor term={self.term} name={self.name}>"
+
 
 class User(Model):
 
diff --git a/ordr3/repo.py b/ordr3/repo.py
index 5257b7c..5ac49a5 100644
--- a/ordr3/repo.py
+++ b/ordr3/repo.py
@@ -65,6 +65,10 @@ class AbstractOrderRepository(abc.ABC):
     def get_vendor_aggregates(self, reference):
         """ list a all canonical names of vendors """
 
+    @abc.abstractmethod
+    def update_vendors(self, old_vendor, new_name, new_terms):
+        """ update autocorrect values of vendors """
+
     @abc.abstractmethod
     def add_reset_token(self, token):
         """ add an password reset token """
@@ -191,6 +195,23 @@ class SqlAlchemyRepository(AbstractOrderRepository):
         terms = sorted((v.term for v in vendors), key=lambda x: x.lower())
         return models.VendorAggregate(vendors[0].name, terms)
 
+    def update_vendors(self, old_vendor, new_name, new_terms):
+        """ update autocorrect values of vendors """
+        # remove old vendor autocorrect values
+        self.session.query(models.Vendor).filter(
+            models.Vendor.name == old_vendor.name
+        ).delete(synchronize_session="fetch")
+
+        # delete all terms to be added later
+        self.session.query(models.Vendor).filter(
+            models.Vendor.term.in_(new_terms)
+        ).delete(synchronize_session="fetch")
+
+        # add the new definition:
+        for new_term in new_terms:
+            new_vendor = models.Vendor(new_term, new_name)
+            self._add_item_to_db(new_vendor)
+
     def add_reset_token(self, token):
         """ add an password reset token """
         self._add_item_to_db(token)
diff --git a/ordr3/resources.py b/ordr3/resources.py
index 5f422ee..24e7c41 100644
--- a/ordr3/resources.py
+++ b/ordr3/resources.py
@@ -118,7 +118,6 @@ class Vendor(BaseResource):
     @classmethod
     def from_model(cls, model, parent):
         """ initializes a resource from an model object """
-        print(model)
         return cls(model.name, parent, model)
 
 
diff --git a/ordr3/services.py b/ordr3/services.py
index 59247ce..0951688 100644
--- a/ordr3/services.py
+++ b/ordr3/services.py
@@ -98,6 +98,12 @@ def _vendor_with_common_domain(vendor):
     return vendor
 
 
+def canonical_vendor_name(vendor):
+    cleaned = " ".join(vendor.strip().split())
+    tmp = _vendor_from_url(cleaned)
+    return _vendor_with_common_domain(tmp)
+
+
 CheckVendorResult = namedtuple("CheckVendorResult", ["name", "found"])
 
 
@@ -105,7 +111,7 @@ def check_vendor_name(repo, to_check):
     # remove unused whitespace
     cleaned = " ".join(to_check.strip().split())
     tmp = _vendor_from_url(cleaned)
-    canonical_name = _vendor_with_common_domain(tmp)
+    canonical_name = canonical_vendor_name(tmp)
 
     vendor = repo.search_vendor(canonical_name.lower())
 
diff --git a/ordr3/templates/vendors/edit.jinja2 b/ordr3/templates/vendors/edit.jinja2
new file mode 100644
index 0000000..65f0ef4
--- /dev/null
+++ b/ordr3/templates/vendors/edit.jinja2
@@ -0,0 +1,37 @@
+{% extends "ordr3:templates/layout_full.jinja2" %}
+
+{% block subtitle %} Edit Vendor Autocorrect for "{{ context.model.name }}" {% endblock subtitle %}
+
+
+{% block sidebar %}{% endblock sidebar %}
+
+
+{% block content %}
+
+<div class="col-5">
+    <h4 class="mb-2 text-muted mb-4 text-truncate">Edit Autorcorrect for <span class="text-dark">{{ context.model.name }}</span></h4>
+    <form action="{{ context|resource_url() }}" method="POST">
+        <div class="form-group">
+            <label for="vendor">Autocorrect result</label>
+            <input type="text" class="form-control {% if form_error %}is-invalid{% endif %}" id="vendor" name="vendor" value="{{ context.model.name }}" required="required">
+            <div class="invalid-feedback">Must not be empty</div>
+        </div>
+        <div class="form-group">
+            <label for="terms">Terms to be corrected</label>
+            <textarea class="form-control {% if form_error %}is-invalid{% endif %}" id="terms" name="terms" rows="{{ context.model.terms|length + 2 }}" required="required">{{ context.model.terms|join("\n") }}</textarea>
+            <small id="emailHelp" class="form-text text-muted">Add one term per line</small>
+            <div class="invalid-feedback">Must not be empty</div>
+        </div>
+
+        <p class="mt-4">
+            <input type="hidden" name="csrf_token" value="{{csrf_token}}">
+            <button class="btn btn-primary" type="submit" name="change">Change Vendor Autoccorrect </button>
+            <button class="btn btn-outline-secondary" type="submit" name="cancel">Cancel</button>
+        </p>
+    </form>
+</div>
+
+
+<div class="col-5"></div>
+
+{% endblock content %}
diff --git a/ordr3/templates/vendors/list.jinja2 b/ordr3/templates/vendors/list.jinja2
index 2f0c8c1..8b7bd8e 100644
--- a/ordr3/templates/vendors/list.jinja2
+++ b/ordr3/templates/vendors/list.jinja2
@@ -3,9 +3,7 @@
 {% block subtitle %} Manage Vendor Autocorrect {% endblock subtitle %}
 
 
-{% block sidebar %}
-
-{% endblock sidebar %}
+{% block sidebar %}{% endblock sidebar %}
 
 
 {% block content %}
diff --git a/ordr3/views/vendors.py b/ordr3/views/vendors.py
index 2a044b0..add52ab 100644
--- a/ordr3/views/vendors.py
+++ b/ordr3/views/vendors.py
@@ -1,13 +1,9 @@
-# import deform
 from sqlalchemy import func
-
-# from pyramid.csrf import get_csrf_token
+from pyramid.csrf import get_csrf_token
 from pyramid.view import view_config
+from pyramid.httpexceptions import HTTPFound
 
-# from .. import events, models, services, resources
-from .. import models
-
-# from pyramid.httpexceptions import HTTPFound
+from .. import events, models, services
 
 
 @view_config(
@@ -26,3 +22,48 @@ def vendor_list(context, request):
     )
 
     return {"vendors": vendors}
+
+
+@view_config(
+    context="ordr3:resources.Vendor",
+    permission="edit",
+    request_method="GET",
+    renderer="ordr3:templates/vendors/edit.jinja2",
+)
+def vendor_edit_form(context, request):
+    return {
+        "form_error": False,
+        "csrf_token": get_csrf_token(request),
+    }
+
+
+@view_config(
+    context="ordr3:resources.Vendor",
+    permission="edit",
+    request_method="POST",
+    renderer="ordr3:templates/vendors/edit.jinja2",
+)
+def vendor_edit(context, request):
+    if "change" not in request.POST:
+        return HTTPFound(request.resource_url(context.__parent__))
+
+    vendor = request.POST.get("vendor", "").strip()
+    terms = request.POST.get("terms", "").strip()
+
+    if vendor and terms:
+        terms = set(terms.lower().splitlines())
+        canonical_name = services.canonical_vendor_name(vendor)
+        terms.add(canonical_name.lower())
+        request.repo.update_vendors(context.model, vendor, terms)
+
+        request.emit(
+            events.FlashMessage.info(
+                f"The autocorrect for {vendor} was updated."
+            )
+        )
+        return HTTPFound(request.resource_url(context.__parent__))
+
+    return {
+        "form_error": True,
+        "csrf_token": get_csrf_token(request),
+    }
diff --git a/tests/test_models.py b/tests/test_models.py
index 655a5fe..9d135a2 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -112,6 +112,14 @@ def test_vendor_init():
     assert vendor.name == "B"
 
 
+def test_vendor_repr():
+    from ordr3.models import Vendor
+
+    vendor = Vendor("A", "B")
+
+    assert repr(vendor) == "<ordr3.models.Vendor term=A name=B>"
+
+
 def test_user_init():
     from ordr3.models import User
 
diff --git a/tests/test_repo.py b/tests/test_repo.py
index 984e218..e17a981 100644
--- a/tests/test_repo.py
+++ b/tests/test_repo.py
@@ -89,6 +89,18 @@ def example_tokens():
     ]
 
 
+@pytest.fixture()
+def example_vendors():
+    from ordr3.models import Vendor
+
+    return [
+        Vendor("sb", "Sigma Aldrich"),
+        Vendor("sa", "Sigma Aldrich"),
+        Vendor("vw", "VWR"),
+        Vendor("me", "Merck"),
+    ]
+
+
 def test_sql_repo_add_order(session, example_orders):
     from ordr3.repo import SqlAlchemyRepository
     from ordr3.models import OrderItem
@@ -283,17 +295,12 @@ def test_sql_search_vendor(session, example_users):
     assert repo.search_vendor("unknown") is None
 
 
-def test_sql_get_vendor_aggregates(session):
+def test_sql_get_vendor_aggregates(session, example_vendors):
     from ordr3.repo import SqlAlchemyRepository
-    from ordr3.models import Vendor, VendorAggregate
+    from ordr3.models import VendorAggregate
 
     repo = SqlAlchemyRepository(session)
-    entry_1 = Vendor("sb", "Sigma Aldrich")
-    entry_2 = Vendor("sa", "Sigma Aldrich")
-    entry_3 = Vendor("vwr", "VWR")
-    session.add(entry_1)
-    session.add(entry_2)
-    session.add(entry_3)
+    session.add_all(example_vendors)
     session.flush()
 
     result = repo.get_vendor_aggregates("Sigma Aldrich")
@@ -312,6 +319,28 @@ def test_sql_get_vendor_aggregates_raises_error(session):
         repo.get_vendor_aggregates("Sigma Aldrich")
 
 
+def test_sql_update_vendors(session, example_vendors):
+    from ordr3.repo import SqlAlchemyRepository
+    from ordr3.models import Vendor, VendorAggregate
+
+    repo = SqlAlchemyRepository(session)
+    session.add_all(example_vendors)
+    session.flush()
+
+    old_vendor = VendorAggregate("Sigma Aldrich", None)
+
+    repo.update_vendors(old_vendor, "ACME", {"sa", "me", "sx"})
+
+    result = session.query(Vendor).order_by(Vendor.term).all()
+
+    assert result == [
+        Vendor("me", "ACME"),
+        Vendor("sa", "ACME"),
+        Vendor("sx", "ACME"),
+        Vendor("vw", "VWR"),
+    ]
+
+
 def test_sql_repo_add_reset_token(session, example_tokens):
     from ordr3.repo import SqlAlchemyRepository
     from ordr3.models import PasswordResetToken
diff --git a/tests/test_services.py b/tests/test_services.py
index 8c46bff..d8d01a9 100644
--- a/tests/test_services.py
+++ b/tests/test_services.py
@@ -3,7 +3,7 @@ from datetime import datetime, timedelta
 import pytest
 
 from ordr3.repo import AbstractOrderRepository
-from ordr3.models import VendorAggregate
+from ordr3.models import Vendor, VendorAggregate
 
 
 class FakeOrderRepository(AbstractOrderRepository):
@@ -67,6 +67,16 @@ class FakeOrderRepository(AbstractOrderRepository):
         first_vendor = next(iter(vendors))
         return VendorAggregate(first_vendor.name, terms)
 
+    def update_vendors(self, old_vendor, new_name, new_terms):
+        """ update autocorrect values of vendors """
+        vendors_to_delete = {
+            v for v in self._vendors if v.name == old_vendor.name
+        }
+        terms_to_delete = {v for v in self._vendors if v.term in new_terms}
+        self._vendors = self._vendors - vendors_to_delete - terms_to_delete
+        for new_term in new_terms:
+            self._vendors.add(Vendor(new_term, new_name))
+
     def add_reset_token(self, token):
         """ add an password reset token """
         self._tokens.add(token)