diff --git a/packages/server/src/database/migrations/mariadb/1755748356008-AddChatFlowNameIndex.ts b/packages/server/src/database/migrations/mariadb/1755748356008-AddChatFlowNameIndex.ts
index 62c74f167..1fe79f449 100644
--- a/packages/server/src/database/migrations/mariadb/1755748356008-AddChatFlowNameIndex.ts
+++ b/packages/server/src/database/migrations/mariadb/1755748356008-AddChatFlowNameIndex.ts
@@ -4,7 +4,7 @@ export class AddChatFlowNameIndex1755748356008 implements MigrationInterface {
     name = 'AddChatFlowNameIndex1755748356008'
 
     public async up(queryRunner: QueryRunner): Promise<void> {
-        await queryRunner.query(`CREATE INDEX \`IDX_chatflow_name\` ON \`chat_flow\` (\`name\`)`)
+        await queryRunner.query(`CREATE INDEX \`IDX_chatflow_name\` ON \`chat_flow\` (LEFT(\`name\`, 255))`)
     }
 
     public async down(queryRunner: QueryRunner): Promise<void> {
diff --git a/packages/server/src/database/migrations/mysql/1755748356008-AddChatFlowNameIndex.ts b/packages/server/src/database/migrations/mysql/1755748356008-AddChatFlowNameIndex.ts
index 62c74f167..1fe79f449 100644
--- a/packages/server/src/database/migrations/mysql/1755748356008-AddChatFlowNameIndex.ts
+++ b/packages/server/src/database/migrations/mysql/1755748356008-AddChatFlowNameIndex.ts
@@ -4,7 +4,7 @@ export class AddChatFlowNameIndex1755748356008 implements MigrationInterface {
     name = 'AddChatFlowNameIndex1755748356008'
 
     public async up(queryRunner: QueryRunner): Promise<void> {
-        await queryRunner.query(`CREATE INDEX \`IDX_chatflow_name\` ON \`chat_flow\` (\`name\`)`)
+        await queryRunner.query(`CREATE INDEX \`IDX_chatflow_name\` ON \`chat_flow\` (LEFT(\`name\`, 255))`)
     }
 
     public async down(queryRunner: QueryRunner): Promise<void> {
diff --git a/packages/server/src/database/migrations/postgres/1755748356008-AddChatFlowNameIndex.ts b/packages/server/src/database/migrations/postgres/1755748356008-AddChatFlowNameIndex.ts
index 75ebae637..4adfabf1e 100644
--- a/packages/server/src/database/migrations/postgres/1755748356008-AddChatFlowNameIndex.ts
+++ b/packages/server/src/database/migrations/postgres/1755748356008-AddChatFlowNameIndex.ts
@@ -4,7 +4,7 @@ export class AddChatFlowNameIndex1755748356008 implements MigrationInterface {
     name = 'AddChatFlowNameIndex1755748356008'
 
     public async up(queryRunner: QueryRunner): Promise<void> {
-        await queryRunner.query(`CREATE INDEX "IDX_chatflow_name" ON "chat_flow" ("name")`)
+        await queryRunner.query(`CREATE INDEX "IDX_chatflow_name" ON "chat_flow" (substring("name" from 1 for 255))`)
     }
 
     public async down(queryRunner: QueryRunner): Promise<void> {
diff --git a/packages/server/src/database/migrations/sqlite/1755748356008-AddChatFlowNameIndex.ts b/packages/server/src/database/migrations/sqlite/1755748356008-AddChatFlowNameIndex.ts
index 75ebae637..9f6023caa 100644
--- a/packages/server/src/database/migrations/sqlite/1755748356008-AddChatFlowNameIndex.ts
+++ b/packages/server/src/database/migrations/sqlite/1755748356008-AddChatFlowNameIndex.ts
@@ -4,7 +4,7 @@ export class AddChatFlowNameIndex1755748356008 implements MigrationInterface {
     name = 'AddChatFlowNameIndex1755748356008'
 
     public async up(queryRunner: QueryRunner): Promise<void> {
-        await queryRunner.query(`CREATE INDEX "IDX_chatflow_name" ON "chat_flow" ("name")`)
+        await queryRunner.query(`CREATE INDEX "IDX_chatflow_name" ON "chat_flow" (substr("name", 1, 255))`)
     }
 
     public async down(queryRunner: QueryRunner): Promise<void> {