diff --git a/docs/pages/database/prisma.md b/docs/pages/database/prisma.md
index e80516192..c3b581827 100644
--- a/docs/pages/database/prisma.md
+++ b/docs/pages/database/prisma.md
@@ -12,6 +12,8 @@ npm install @lucia-auth/adapter-prisma
 
 ## Schema
 
+While Lucia does not enforce model names, the relation name (`user`) in the session model must be the camel-case version of the user model name. For example, if the user model was named `AuthUser`, the relation must be named `Session.authUser`.
+
 ```prisma
 model User {
   id       String    @id
diff --git a/packages/adapter-prisma/package.json b/packages/adapter-prisma/package.json
index 5e6c53797..6ddf9abdf 100644
--- a/packages/adapter-prisma/package.json
+++ b/packages/adapter-prisma/package.json
@@ -13,7 +13,7 @@
 	"scripts": {
 		"build": "shx rm -rf ./dist/* && tsc",
 		"test": "tsx tests/prisma.ts",
-		"test-setup": "prisma db push",
+		"test-setup": "prisma db push && prisma generate",
 		"auri.build": "pnpm build"
 	},
 	"keywords": [
diff --git a/packages/adapter-prisma/src/index.ts b/packages/adapter-prisma/src/index.ts
index 2030527fa..896dc0fee 100644
--- a/packages/adapter-prisma/src/index.ts
+++ b/packages/adapter-prisma/src/index.ts
@@ -39,10 +39,7 @@ export class PrismaAdapter<_PrismaClient extends PrismaClient> implements Adapte
 		sessionId: string
 	): Promise<[session: DatabaseSession | null, user: DatabaseUser | null]> {
 		const userModelKey = this.userModel.name[0].toLowerCase() + this.userModel.name.slice(1);
-		const result = await this.sessionModel.findUnique<{
-			// this is a lie to make TS shut up
-			user: UserSchema;
-		}>({
+		const result = await this.sessionModel.findUnique({
 			where: {
 				id: sessionId
 			},
@@ -51,7 +48,9 @@ export class PrismaAdapter<_PrismaClient extends PrismaClient> implements Adapte
 			}
 		});
 		if (!result) return [null, null];
-		const userResult: UserSchema = result[userModelKey as "user"];
+		const userResult: UserSchema = result[
+			userModelKey as keyof typeof result
+		] as any as UserSchema;
 		delete result[userModelKey as keyof typeof result];
 		return [transformIntoDatabaseSession(result), transformIntoDatabaseUser(userResult)];
 	}
diff --git a/packages/adapter-prisma/tests/prisma.ts b/packages/adapter-prisma/tests/prisma.ts
index 948977a7a..d8c2e70ca 100644
--- a/packages/adapter-prisma/tests/prisma.ts
+++ b/packages/adapter-prisma/tests/prisma.ts
@@ -20,3 +20,11 @@ await client.session.deleteMany();
 await client.user.deleteMany();
 
 process.exit(0);
+
+declare module "lucia" {
+	interface Register {
+		DatabaseUserAttributes: {
+			username: string;
+		};
+	}
+}