diff --git a/CHANGELOG.md b/CHANGELOG.md
index 21c74be4008..c4946650f03 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ Add any new changes to the top(right below this line).
 
 - Role: nginx
   - Add the possibility to add the header `Content-Security-Policy frame-ancestors`. This is configured by the
-    EDXAPP_LMS_IFRAME_ENABLED switcher and EDXAPP_LMS_FRAME-ANCESTORS value.
+    EDXAPP_LMS_IFRAME_ENABLED switcher and EDXAPP_LMS_FRAME_ANCESTORS value.
 
 - Role: edxapp BREAKING_CHANGE
   - The sandbox environment that runs instructor written python code used to run python 2.7. We update the default to
diff --git a/playbooks/roles/nginx/templates/edx/app/nginx/sites-available/lms.j2 b/playbooks/roles/nginx/templates/edx/app/nginx/sites-available/lms.j2
index cb5fe33d3de..7c4d9b59f8b 100644
--- a/playbooks/roles/nginx/templates/edx/app/nginx/sites-available/lms.j2
+++ b/playbooks/roles/nginx/templates/edx/app/nginx/sites-available/lms.j2
@@ -123,7 +123,7 @@ error_page {{ k }} {{ v }};
 
   {% if EDXAPP_LMS_IFRAME_ENABLED %}
   # Allow iFrame for the provided hosts
-  add_header Content-Security-Policy "frame-ancestors 'self' {{ EDXAPP_LMS_FRAME-ANCESTORS }}";
+  add_header Content-Security-Policy "frame-ancestors 'self' {{ EDXAPP_LMS_FRAME_ANCESTORS }}";
   {% endif %}
 
   # Prevent invalid display courseware in IE 10+ with high privacy settings