diff --git a/judge/views/problem.py b/judge/views/problem.py
index e031a90..450f017 100644
--- a/judge/views/problem.py
+++ b/judge/views/problem.py
@@ -1194,6 +1194,7 @@ def problem_submit(request, problem, submission=None):
             "ACE_URL": settings.ACE_URL,
             "default_lang": default_lang,
             "problem_id": problem.id,
+            "output_only": problem.data_files.output_only,
         },
     )
 
diff --git a/templates/problem/submit.html b/templates/problem/submit.html
index 85aa159..7f36406 100644
--- a/templates/problem/submit.html
+++ b/templates/problem/submit.html
@@ -21,22 +21,26 @@
         }
 
         function update_language_template() {
-          var source = $('textarea#id_source');
-          if (source.val() == window.previous_template.replace(/\r/g, '') || source.val() == '') {
-            var lang_id = $('#id_language').val();
-            var code = localStorage.getItem('submit:' + $('#id_language').val());
+          {% if output_only %}
+            window.ace_source.env.editor.setReadOnly(true);
+          {% else %}
+            var source = $('textarea#id_source');
+            if (source.val() == window.previous_template.replace(/\r/g, '') || source.val() == '') {
+              var lang_id = $('#id_language').val();
+              var code = localStorage.getItem('submit:' + $('#id_language').val());
 
-            if (code != null) {
-              update_submit_area(code);
-            } else {
-              $.get('{{ url('language_template_ajax') }}', {
-                id: lang_id,
-                problem: {{problem_id}}
-              }).done(function (template) {
-                update_submit_area(template);
-              });
+              if (code != null) {
+                update_submit_area(code);
+              } else {
+                $.get('{{ url('language_template_ajax') }}', {
+                  id: lang_id,
+                  problem: {{problem_id}}
+                }).done(function (template) {
+                  update_submit_area(template);
+                });
+              }
             }
-          }
+          {% endif %}
         }
 
         function makeDisplayData(data) {