diff --git a/app/corpora/views.py b/app/corpora/views.py
index f7bfbd6f..2e5e9130 100644
--- a/app/corpora/views.py
+++ b/app/corpora/views.py
@@ -79,6 +79,18 @@ def corpus_analysis(corpus_id):
                            title='Corpus: {}'.format(corpus.title))
 
 
+@corpora.route('/<int:corpus_id>/prepare')
+@login_required
+def prepare_corpus(corpus_id):
+    corpus = Corpus.query.get_or_404(corpus_id)
+    if not (corpus.creator == current_user or current_user.is_administrator()):
+        abort(403)
+    corpus.status = 'preparable'
+    db.session.commit()
+    flash('Corpus marked for preparation!')
+    return redirect(url_for('corpora.corpus', corpus_id=corpus_id))
+
+
 @corpora.route('/<int:corpus_id>/delete')
 @login_required
 def delete_corpus(corpus_id):
diff --git a/app/templates/corpora/corpus.html.j2 b/app/templates/corpora/corpus.html.j2
index bf04d74d..7ab6fcf5 100644
--- a/app/templates/corpora/corpus.html.j2
+++ b/app/templates/corpora/corpus.html.j2
@@ -21,7 +21,10 @@
       </div>
     </div>
     <div class="card-action right-align">
+      {% if corpus.status == 'prepared' %}
       <a href="{{ url_for('corpora.corpus_analysis', corpus_id=corpus.id) }}" class="waves-effect waves-light btn"><i class="material-icons left">help</i>Analyse</a>
+      {% endif %}
+      <a href="{{ url_for('corpora.prepare_corpus', corpus_id=corpus.id) }}" class="waves-effect waves-light btn"><i class="material-icons left">whatshot</i>Prepare</a>
       <a data-target="delete-corpus-modal" class="waves-effect waves-light btn red modal-trigger"><i class="material-icons left">delete</i>Delete Corpus</a>
     </div>
   </div>