diff --git a/models/formatted_code.ts b/models/formatted_code.ts
index 3de8735..362860f 100644
--- a/models/formatted_code.ts
+++ b/models/formatted_code.ts
@@ -3,7 +3,7 @@ import Model from "./common";
 
 @TypeORM.Entity()
 export default class FormattedCode extends Model {
-  @TypeORM.Column({ type: "varchar", length: 50, primary: true })
+  @TypeORM.PrimaryColumn({ type: "varchar", length: 50 })
   key: string;
 
   @TypeORM.Column({ nullable: true, type: "mediumtext" })
diff --git a/models/problem_tag_map.ts b/models/problem_tag_map.ts
index f7f710b..b054821 100644
--- a/models/problem_tag_map.ts
+++ b/models/problem_tag_map.ts
@@ -4,10 +4,10 @@ import Model from "./common";
 @TypeORM.Entity()
 export default class ProblemTagMap extends Model {
   @TypeORM.Index()
-  @TypeORM.Column({ type: "integer", primary: true })
+  @TypeORM.PrimaryColumn({ type: "integer" })
   problem_id: number;
 
   @TypeORM.Index()
-  @TypeORM.Column({ type: "integer", primary: true })
+  @TypeORM.PrimaryColumn({ type: "integer" })
   tag_id: number;
 }
diff --git a/models/rating_history.ts b/models/rating_history.ts
index 86161f7..2219db3 100644
--- a/models/rating_history.ts
+++ b/models/rating_history.ts
@@ -7,10 +7,10 @@ import User from "./user";
 
 @TypeORM.Entity()
 export default class RatingHistory extends Model {
-  @TypeORM.Column({ type: "integer", primary: true })
+  @TypeORM.PrimaryColumn({ type: "integer" })
   rating_calculation_id: number;
 
-  @TypeORM.Column({ type: "integer", primary: true })
+  @TypeORM.PrimaryColumn({ type: "integer" })
   user_id: number;
 
   @TypeORM.Column({ nullable: true, type: "integer" })
diff --git a/models/user_privilege.ts b/models/user_privilege.ts
index fcb997c..2e8a4ab 100644
--- a/models/user_privilege.ts
+++ b/models/user_privilege.ts
@@ -4,10 +4,10 @@ import Model from "./common";
 @TypeORM.Entity()
 export default class UserPrivilege extends Model {
   @TypeORM.Index()
-  @TypeORM.Column({ type: "integer", primary: true })
+  @TypeORM.PrimaryColumn({ type: "integer" })
   user_id: number;
 
   @TypeORM.Index()
-  @TypeORM.Column({ type: "varchar", length: 80, primary: true })
+  @TypeORM.PrimaryColumn({ type: "varchar", length: 80 })
   privilege: string;
 }