diff --git a/src/logic/course-info.ts b/src/logic/course-info.ts
index f535ac2..5ad99fd 100644
--- a/src/logic/course-info.ts
+++ b/src/logic/course-info.ts
@@ -125,9 +125,15 @@ export class CourseInfoRating
     }
 }
 
-export interface AnalyzedRating
+export class AnalyzedRating
 {
     ratingCounts: number[][]
     ratingSums: number[]
     totalCount: number
+    constructor(json: any)
+    {
+        this.ratingCounts = json.ratingCounts;
+        this.ratingSums = json.ratingSums;
+        this.totalCount = json.totalCount;
+    }
 }
diff --git a/src/pages/course-selection/pages/course-detail.vue b/src/pages/course-selection/pages/course-detail.vue
index 0d05a7b..3ef86bf 100644
--- a/src/pages/course-selection/pages/course-detail.vue
+++ b/src/pages/course-selection/pages/course-detail.vue
@@ -45,7 +45,7 @@
                     if (result.success)
                     {
                         // Assign rating
-                        c.rating = result.data as AnalyzedRating;
+                        c.rating = new AnalyzedRating(result.data);
                     }
                     else
                     {