diff --git a/CHANGES.rst b/CHANGES.rst
index 887a5c2..1264fac 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -12,6 +12,9 @@ Changelog of TRS
 - Fixed person creation. Name wasn't getting set. All name updates to User are
   handled now, fixing the problem.
 
+- Fixed 'projectbegroting' form, which didn't display errors (and the form itself)
+  properly when there was a validation error.
+
 
 2.1 (2022-08-08)
 ----------------
diff --git a/trs/templates/trs/project-budget-edit.html b/trs/templates/trs/project-budget-edit.html
index b223d8d..48fdc7e 100644
--- a/trs/templates/trs/project-budget-edit.html
+++ b/trs/templates/trs/project-budget-edit.html
@@ -15,11 +15,6 @@ <h1>{{ view.title }}</h1>
     </div>
   {% endfor %}
 
-
-  {% for error in view.project_form.errors.values %}
-    <div class="alert alert-danger">{{ error }}</div>
-  {% endfor %}
-
   <form action="." method="post">
     {% csrf_token %}
 
@@ -58,6 +53,9 @@ <h1>{{ view.title }}</h1>
             </td>
             <td title="{{ form.amount.label }}">
               {{ form.amount }}
+              {% for error in form.amount.errors %}
+                <div class="alert alert-danger">{{ error }}</div>
+              {% endfor %}
             </td>
             <td title="delete">
               {{ form.DELETE }}
@@ -92,6 +90,9 @@ <h1>{{ view.title }}</h1>
         {% for form in view.project_member_formset %}
           <tr>
             {{ form.person_id }}
+            {% for error in form.non_field_errors %}
+              <div class="alert alert-danger">{{ error }}</div>
+            {% endfor %}
             <td>
               &nbsp;&nbsp;&nbsp;
               {{ form.person.as_widget }}
@@ -114,6 +115,9 @@ <h1>{{ view.title }}</h1>
 
             <td title="{{ form.hours.label }}">
               {{ form.hours }}
+              {% for error in form.hours.errors %}
+                <div class="alert alert-danger">{{ error }}</div>
+              {% endfor %}
             </td>
             <td>
               <span class="text-muted">
@@ -122,6 +126,9 @@ <h1>{{ view.title }}</h1>
             </td>
             <td title="{{ form.hourly_tariff.label }}">
               {{ form.hourly_tariff }}
+              {% for error in form.hourly_tariff.errors %}
+                <div class="alert alert-danger">{{ error }}</div>
+              {% endfor %}
             </td>
             <td>
               {{ form.person.standard_hourly_tariff }}
@@ -167,6 +174,9 @@ <h1>{{ view.title }}</h1>
           </td>
           <td>
             {{ view.project_form.reservation }}
+            {% for error in view.project_form.reservation.errors %}
+              <div class="alert alert-danger">{{ error }}</div>
+            {% endfor %}
           </td>
           <td>
           </td>
@@ -205,6 +215,9 @@ <h1>{{ view.title }}</h1>
             </td>
             <td title="{{ form.amount.label }}">
               {{ form.amount }}
+              {% for error in form.amount.errors %}
+                <div class="alert alert-danger">{{ error }}</div>
+              {% endfor %}
             </td>
             <td title="delete">
               {{ form.DELETE }}
@@ -254,6 +267,9 @@ <h1>{{ view.title }}</h1>
           </td>
           <td>
             {{ view.project_form.software_development }}
+            {% for error in view.project_form.software_development.errors %}
+              <div class="alert alert-danger">{{ error }}</div>
+            {% endfor %}
           </td>
           <td>
           </td>
@@ -266,6 +282,9 @@ <h1>{{ view.title }}</h1>
           </td>
           <td>
             {{ view.project_form.profit }}
+            {% for error in view.project_form.profit.errors %}
+              <div class="alert alert-danger">{{ error }}</div>
+            {% endfor %}
           </td>
           <td>
           </td>
diff --git a/trs/views.py b/trs/views.py
index 18d3def..f343742 100644
--- a/trs/views.py
+++ b/trs/views.py
@@ -2178,7 +2178,7 @@ def post(self, *args, **kwargs):
             and self.budget_item_formset.is_valid()
             and self.project_member_formset.is_valid()
         ):
-
+            logger.debug("All forms are valid")
             self.project_form.save()
             self.estimate_formset.save()
             self.budget_item_formset.save()
@@ -2197,7 +2197,14 @@ def post(self, *args, **kwargs):
 
             return HttpResponseRedirect(self.success_url)
         else:
+            messages.error(self.request, "Corrigeer de fouten hieronder")
             context = self.get_context_data(**kwargs)
+            context["project_form"] = self.project_form
+            context["new_member_form"] = self.new_member_form
+            context["estimate_formset"] = self.estimate_formset
+            context["budget_item_formset"] = self.budget_item_formset
+            context["project_member_formset"] = self.project_member_formset
+            self.adjust_project_member_formset()
             return self.render_to_response(context)
 
     def add_team_member(self, id):