diff --git a/server/src/database.ts b/server/src/database.ts
index 100ba451e7..a0f2b19abc 100644
--- a/server/src/database.ts
+++ b/server/src/database.ts
@@ -230,8 +230,8 @@ export type Session = {
   createdAt: Date;
   updatedAt: Date;
   expiresAt: Date | null;
-  deviceOS: string;
-  deviceType: string;
+  deviceOS: string | null;
+  deviceType: string | null;
   appVersion: string | null;
   pinExpiresAt: Date | null;
   isPendingSyncReset: boolean;
diff --git a/server/src/dtos/session.dto.ts b/server/src/dtos/session.dto.ts
index c81dac6d79..f49ac87bf1 100644
--- a/server/src/dtos/session.dto.ts
+++ b/server/src/dtos/session.dto.ts
@@ -5,8 +5,8 @@ import z from 'zod';
 const SessionCreateSchema = z
   .object({
     duration: z.int().min(1).optional().describe('Session duration in seconds'),
-    deviceType: z.string().optional().describe('Device type'),
-    deviceOS: z.string().optional().describe('Device OS'),
+    deviceType: z.string().nullish().transform((val) => (val === '' ? null : val)).describe('Device type'),
+    deviceOS: z.string().nullish().transform((val) => (val === '' ? null : val)).describe('Device OS'),
   })
   .meta({ id: 'SessionCreateDto' });
 
@@ -23,8 +23,8 @@ const SessionResponseSchema = z
     updatedAt: z.string().describe('Last update date'),
     expiresAt: z.string().optional().describe('Expiration date'),
     current: z.boolean().describe('Is current session'),
-    deviceType: z.string().describe('Device type'),
-    deviceOS: z.string().describe('Device OS'),
+    deviceType: z.string().nullable().describe('Device type'),
+    deviceOS: z.string().nullable().describe('Device OS'),
     appVersion: z.string().nullable().describe('App version'),
     isPendingSyncReset: z.boolean().describe('Is pending sync reset'),
   })
diff --git a/server/src/schema/migrations/1784471379379-ConvertSessionDeviceTypeAndOSEmptyStringToNull.ts b/server/src/schema/migrations/1784471379379-ConvertSessionDeviceTypeAndOSEmptyStringToNull.ts
new file mode 100644
index 0000000000..2bfbfd08e0
--- /dev/null
+++ b/server/src/schema/migrations/1784471379379-ConvertSessionDeviceTypeAndOSEmptyStringToNull.ts
@@ -0,0 +1,19 @@
+import { Kysely, sql } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await sql`ALTER TABLE "session" ALTER COLUMN "deviceType" DROP NOT NULL;`.execute(db);
+  await sql`ALTER TABLE "session" ALTER COLUMN "deviceType" SET DEFAULT NULL;`.execute(db);
+  await sql`UPDATE "session" SET "deviceType" = NULL WHERE "deviceType" = '';`.execute(db);
+  await sql`ALTER TABLE "session" ALTER COLUMN "deviceOS" DROP NOT NULL;`.execute(db);
+  await sql`ALTER TABLE "session" ALTER COLUMN "deviceOS" SET DEFAULT NULL;`.execute(db);
+  await sql`UPDATE "session" SET "deviceOS" = NULL WHERE "deviceOS" = '';`.execute(db);
+}
+
+export async function down(): Promise<void> {
+  await sql`UPDATE "session" SET "deviceOS" = '' WHERE "deviceOS" IS NULL;`.execute(db);
+  await sql`ALTER TABLE "session" ALTER COLUMN "deviceOS" SET DEFAULT '';`.execute(db);
+  await sql`ALTER TABLE "session" ALTER COLUMN "deviceOS" SET NOT NULL;`.execute(db);
+  await sql`UPDATE "session" SET "deviceType" = '' WHERE "deviceType" IS NULL;`.execute(db);
+  await sql`ALTER TABLE "session" ALTER COLUMN "deviceType" SET DEFAULT '';`.execute(db);
+  await sql`ALTER TABLE "session" ALTER COLUMN "deviceType" SET NOT NULL;`.execute(db);
+}
diff --git a/server/src/schema/migrations/1784554256820-ConvertExifDescriptionEmptyStringToNull.ts b/server/src/schema/migrations/1784554256820-ConvertExifDescriptionEmptyStringToNull.ts
new file mode 100644
index 0000000000..090e3ac75e
--- /dev/null
+++ b/server/src/schema/migrations/1784554256820-ConvertExifDescriptionEmptyStringToNull.ts
@@ -0,0 +1,13 @@
+import { Kysely, sql } from 'kysely';
+
+export async function up(db: Kysely<any>): Promise<void> {
+  await sql`ALTER TABLE "asset_exif" ALTER COLUMN "description" DROP NOT NULL;`.execute(db);
+  await sql`ALTER TABLE "asset_exif" ALTER COLUMN "description" SET DEFAULT NULL;`.execute(db);
+  await sql`UPDATE "asset_exif" SET "description" = NULL WHERE "description" = '';`.execute(db);
+}
+
+export async function down(): Promise<void> {
+  await sql`UPDATE "asset_exif" SET "description" = '' WHERE "description" IS NULL;`.execute(db);
+  await sql`ALTER TABLE "asset_exif" ALTER COLUMN "description" SET DEFAULT '';`.execute(db);
+  await sql`ALTER TABLE "asset_exif" ALTER COLUMN "description" SET NOT NULL;`.execute(db);
+}
diff --git a/server/src/schema/tables/asset-exif.table.ts b/server/src/schema/tables/asset-exif.table.ts
index d725189e6d..b2044512dd 100644
--- a/server/src/schema/tables/asset-exif.table.ts
+++ b/server/src/schema/tables/asset-exif.table.ts
@@ -74,8 +74,8 @@ export class AssetExifTable {
   @Column({ type: 'character varying', nullable: true })
   country!: string | null;
 
-  @Column({ type: 'text', default: '' })
-  description!: Generated<string>; // or caption
+  @Column({ type: 'text', nullable: true, default: null })
+  description!: string | null; // or caption
 
   @Column({ type: 'double precision', nullable: true })
   fps!: number | null;
diff --git a/server/src/schema/tables/session.table.ts b/server/src/schema/tables/session.table.ts
index 68381b7f8e..f270a1ea0c 100644
--- a/server/src/schema/tables/session.table.ts
+++ b/server/src/schema/tables/session.table.ts
@@ -35,11 +35,11 @@ export class SessionTable {
   @ForeignKeyColumn(() => SessionTable, { onUpdate: 'CASCADE', onDelete: 'CASCADE', nullable: true })
   parentId!: string | null;
 
-  @Column({ default: '' })
-  deviceType!: Generated<string>;
+  @Column({ nullable: true, default: null })
+  deviceType!: string | null;
 
-  @Column({ default: '' })
-  deviceOS!: Generated<string>;
+  @Column({ nullable: true, default: null })
+  deviceOS!: string | null;
 
   @Column({ nullable: true })
   appVersion!: string | null;