diff --git a/oef/templates/oef/replace_questions.html b/oef/templates/oef/replace_questions.html
index 939350e6..63da841f 100644
--- a/oef/templates/oef/replace_questions.html
+++ b/oef/templates/oef/replace_questions.html
@@ -7,6 +7,11 @@
     <br/>
     <label for="exact">Exact match</label><input type="checkbox" name="exact">
     <br/>
+
+    <button 
+    hx-post='{% url "oef:questions_diff" %}'
+    hx-target="#diff-results">Diff</button>
+    <span id="diff-results"></span>
     <button hx-post="{% url 'oef:replace_questions' %}"
     hx-target='#result'>Replace</button>
     <div id="result"></div>
diff --git a/oef/views.py b/oef/views.py
index b16cbed7..cbe52f5c 100644
--- a/oef/views.py
+++ b/oef/views.py
@@ -110,8 +110,12 @@ def entries_by_question(request):
 
 def questions_diff(request):
     if request.method == "POST":
-        question1 = request.POST.get("question1")
-        question2 = request.POST.get("question2")
+        question1 = request.POST.get("question1", False)
+        question2 = request.POST.get("question2", False)
+
+        if not question1:
+            question1 = request.POST.get("search")
+            question2 = request.POST.get("replace")
 
         html = HtmlDiff().make_table(question1.split("\n"), question2.split("\n"))