diff --git a/packages/client/src/generation/TSClient/TSClient.ts b/packages/client/src/generation/TSClient/TSClient.ts
index c5dc08844b85..2b089aa9bb93 100644
--- a/packages/client/src/generation/TSClient/TSClient.ts
+++ b/packages/client/src/generation/TSClient/TSClient.ts
@@ -42,7 +42,7 @@ export interface TSClientOptions {
   schemaDir: string
   outputDir: string
   activeProvider: string
-  dataProxy: boolean
+  dataProxy?: boolean
 }
 
 export class TSClient implements Generatable {
@@ -96,8 +96,8 @@ export class TSClient implements Generatable {
     const relativeOutdir = path.relative(process.cwd(), outputDir)
 
     const code = `${commonCodeJS({ ...this.options, browser: false })}
-${buildRequirePath(dataProxy)}
-${buildDirname(dataProxy, relativeOutdir, runtimeDir)}
+${buildRequirePath(!!dataProxy)}
+${buildDirname(!!dataProxy, relativeOutdir, runtimeDir)}
 /**
  * Enums
  */
@@ -115,7 +115,7 @@ ${new Enum(
   },
   true,
 ).toJS()}
-${buildDMMF(dataProxy, this.dmmfString)}
+${buildDMMF(!!dataProxy, this.dmmfString)}
 
 /**
  * Create the Client
@@ -123,14 +123,14 @@ ${buildDMMF(dataProxy, this.dmmfString)}
 const config = ${JSON.stringify(config, null, 2)}
 config.document = dmmf
 config.dirname = dirname
-${buildInlineDatasource(dataProxy, datasources)}
-${await buildInlineSchema(dataProxy, schemaPath)}
-${buildInlineEnv(dataProxy, datasources, envPaths)}
-${buildWarnEnvConflicts(dataProxy, runtimeDir, runtimeName)}
+${buildInlineDatasource(!!dataProxy, datasources)}
+${await buildInlineSchema(!!dataProxy, schemaPath)}
+${buildInlineEnv(!!dataProxy, datasources, envPaths)}
+${buildWarnEnvConflicts(!!dataProxy, runtimeDir, runtimeName)}
 const PrismaClient = getPrismaClient(config)
 exports.PrismaClient = PrismaClient
 Object.assign(exports, Prisma)
-${buildNFTAnnotations(dataProxy, engineType, platforms, relativeOutdir)}
+${buildNFTAnnotations(!!dataProxy, engineType, platforms, relativeOutdir)}
 `
     return code
   }
diff --git a/packages/client/src/generation/generateClient.ts b/packages/client/src/generation/generateClient.ts
index 371e61b9b6ef..794734e0e69a 100644
--- a/packages/client/src/generation/generateClient.ts
+++ b/packages/client/src/generation/generateClient.ts
@@ -70,7 +70,7 @@ export async function buildClient({
   clientVersion,
   projectRoot,
   activeProvider,
-  dataProxy = false,
+  dataProxy,
 }: GenerateClientOptions): Promise<BuildClientResult> {
   const document = getPrismaClientDMMF(dmmf)
   const clientEngineType = getClientEngineType(generator!)