diff --git a/course/page/code.py b/course/page/code.py
index cbb34af7c..577b4fb51 100644
--- a/course/page/code.py
+++ b/course/page/code.py
@@ -544,6 +544,11 @@ class CodeQuestion(PageBaseWithTitle, PageBaseWithValue):
         example of a local build.  The Docker image should already be loaded
         on the system (RELATE does not pull the image automatically).
 
+    .. attribute:: exact_correct_code_okay
+        Optional. A Boolean that controls whether identical submissions to the
+        correct_code are allowed for code questions. If set to False, an error
+        is shown. Setting this to True will silence the error.
+
     * ``data_files``: A dictionary mapping file names from :attr:`data_files`
       to :class:`bytes` instances with that file's contents.
 
@@ -589,6 +594,9 @@ def __init__(self, vctx, location, page_desc, language_mode):
                     "While you're at it, consider adding "
                     "access_rules/add_permssions/see_correctness."))
 
+        self.exact_correct_code_okay = getattr(page_desc,
+                                                    "exact_correct_code_okay", False)
+
     def required_attrs(self):
         return super().required_attrs() + (
                 ("prompt", "markup"),
@@ -609,6 +617,7 @@ def allowed_attrs(self):
                 ("docker_image", str),
                 ("data_files", list),
                 ("single_submission", bool),
+                ("exact_correct_code_okay", bool),
                 )
 
     def _initial_code(self):
@@ -886,7 +895,8 @@ def normalize_code(s):
                         .replace("\t", ""))
 
             if (normalize_code(user_code)
-                    == normalize_code(self.page_desc.correct_code)):
+                    == normalize_code(self.page_desc.correct_code)
+                        and not self.exact_correct_code_okay):
                 feedback_bits.append(
                         "<p><b>%s</b></p>"
                         % _("It looks like you submitted code that is identical to "
@@ -1234,6 +1244,11 @@ class PythonCodeQuestion(CodeQuestion):
         based on its :attr:`access_rules` (not the ones of the flow), a warning
         is shown. Setting this attribute to True will silence the warning.
 
+    .. attribute:: exact_correct_code_okay
+        Optional. A Boolean that controls whether identical submissions to the
+        correct_code are allowed for code questions. If set to False, an error
+        is shown. Setting this to True will silence the error.
+
     The following symbols are available in :attr:`setup_code` and :attr:`test_code`:
 
     * ``GradingComplete``: An exception class that can be raised to indicated