diff --git a/js/course.js b/js/course.js
index 3d82a07..7586cc2 100644
--- a/js/course.js
+++ b/js/course.js
@@ -183,7 +183,7 @@ function saveCourseSettings(skipSavingGradingScale = false) {
                 obj2.hasOwnProperty(key) && obj1[key] === obj2[key]
             );
 
-        if (!shallowCompare(scale, currentValue[courseIdNumber])) {
+        if (!currentValue[courseIdNumber] || !shallowCompare(scale, currentValue[courseIdNumber])) {
             trackEvent("update_setting", {
                 id: "gradingScales",
                 context: "Course Settings",
diff --git a/manifest.json b/manifest.json
index 827bb35..2d4769e 100644
--- a/manifest.json
+++ b/manifest.json
@@ -10,7 +10,7 @@
             "update_url": "https://schoologypl.us/firefox_updates.json"
         }
     },
-    "version": "7.7.2",
+    "version": "7.7.3",
     "icons": {
         "128": "imgs/icon@128.png",
         "64": "imgs/icon@64.png",