diff --git a/backend/src/entities/connection-properties/connection-properties.entity.ts b/backend/src/entities/connection-properties/connection-properties.entity.ts
index f3afccc7b..8645043bf 100644
--- a/backend/src/entities/connection-properties/connection-properties.entity.ts
+++ b/backend/src/entities/connection-properties/connection-properties.entity.ts
@@ -13,10 +13,10 @@ export class ConnectionPropertiesEntity {
   @Column({ default: null })
   logo_url: string;
 
-  @Column({ default: null })
+  @Column({ default: '' })
   primary_color: string;
 
-  @Column({ default: null })
+  @Column({ default: '' })
   secondary_color: string;
 
   @Column({ default: null })
diff --git a/backend/src/migrations/1762258082256-ChangeDefultColorValuesInConnectionProperties.ts b/backend/src/migrations/1762258082256-ChangeDefultColorValuesInConnectionProperties.ts
new file mode 100644
index 000000000..53697f8fc
--- /dev/null
+++ b/backend/src/migrations/1762258082256-ChangeDefultColorValuesInConnectionProperties.ts
@@ -0,0 +1,21 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class ChangeDefultColorValuesInConnectionProperties1762258082256 implements MigrationInterface {
+  name = 'ChangeDefultColorValuesInConnectionProperties1762258082256';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`ALTER TABLE "connectionProperties" ALTER COLUMN "primary_color" SET DEFAULT ''`);
+    await queryRunner.query(`UPDATE "connectionProperties" SET "primary_color" = '' WHERE "primary_color" IS NULL`);
+    await queryRunner.query(`ALTER TABLE "connectionProperties" ALTER COLUMN "primary_color" SET NOT NULL`);
+    await queryRunner.query(`ALTER TABLE "connectionProperties" ALTER COLUMN "secondary_color" SET DEFAULT ''`);
+    await queryRunner.query(`UPDATE "connectionProperties" SET "secondary_color" = '' WHERE "secondary_color" IS NULL`);
+    await queryRunner.query(`ALTER TABLE "connectionProperties" ALTER COLUMN "secondary_color" SET NOT NULL`);
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(`ALTER TABLE "connectionProperties" ALTER COLUMN "secondary_color" DROP DEFAULT`);
+    await queryRunner.query(`ALTER TABLE "connectionProperties" ALTER COLUMN "secondary_color" DROP NOT NULL`);
+    await queryRunner.query(`ALTER TABLE "connectionProperties" ALTER COLUMN "primary_color" DROP DEFAULT`);
+    await queryRunner.query(`ALTER TABLE "connectionProperties" ALTER COLUMN "primary_color" DROP NOT NULL`);
+  }
+}