diff --git a/services/mana-core-auth/src/db/schema/auth.schema.ts b/services/mana-core-auth/src/db/schema/auth.schema.ts
index 8c67140b7..957c23500 100644
--- a/services/mana-core-auth/src/db/schema/auth.schema.ts
+++ b/services/mana-core-auth/src/db/schema/auth.schema.ts
@@ -135,7 +135,7 @@ export const oauthApplications = authSchema.table('oauth_applications', {
 	metadata: text('metadata'),
 	clientId: text('client_id').unique().notNull(),
 	clientSecret: text('client_secret').notNull(),
-	redirectURLs: text('redirect_urls').notNull(), // Comma-separated URLs (Better Auth expects this format, NOT JSON)
+	redirectUrls: text('redirect_urls').notNull(), // Comma-separated URLs (Better Auth expects 'redirectUrls' property name)
 	type: text('type').notNull().default('web'), // web, native, spa
 	disabled: boolean('disabled').default(false).notNull(),
 	userId: text('user_id').references(() => users.id, { onDelete: 'cascade' }),
diff --git a/services/mana-core-auth/src/db/seeds/seed-oidc-clients.ts b/services/mana-core-auth/src/db/seeds/seed-oidc-clients.ts
index 926b329db..33cbf15a4 100644
--- a/services/mana-core-auth/src/db/seeds/seed-oidc-clients.ts
+++ b/services/mana-core-auth/src/db/seeds/seed-oidc-clients.ts
@@ -63,7 +63,7 @@ async function seed() {
 			.set({
 				clientSecret: synapseClientSecret,
 				// Better Auth expects comma-separated string, NOT JSON array
-				redirectURLs: 'https://matrix.mana.how/_synapse/client/oidc/callback',
+				redirectUrls: 'https://matrix.mana.how/_synapse/client/oidc/callback',
 				updatedAt: new Date(),
 			})
 			.where(eq(oauthApplications.clientId, 'synapse'));
@@ -79,7 +79,7 @@ async function seed() {
 			clientId: 'synapse',
 			clientSecret: synapseClientSecret,
 			// Better Auth expects comma-separated string, NOT JSON array
-			redirectURLs: 'https://matrix.mana.how/_synapse/client/oidc/callback',
+			redirectUrls: 'https://matrix.mana.how/_synapse/client/oidc/callback',
 			type: 'web',
 			disabled: false,
 			metadata: JSON.stringify({