diff --git a/settings.py b/settings.py
index 67c006a..3bd1d14 100644
--- a/settings.py
+++ b/settings.py
@@ -134,7 +134,7 @@ ACCOUNT_ACTIVATION_DAYS = 3
 
 # AUTH_PROFILE_MODULE = 'core.person' # used by removed profiles app ?
 
-QM_PATTERN = "\[\[\s*[Qq][Mm]:([ABC]?)(\d{4})-(\d*)-(\d*)\]\]"
+QM_PATTERN = r"\[\[\s*[Qq][Mm]:([ABC]?)(\d{4})-(\d*)-(\d*)\]\]"
 
 # Re-enable TinyMCE when Dj upgraded to v3. Also templates/editexpopage.html
 # TINYMCE_DEFAULT_CONFIG = {