diff --git a/packages/vite/src/node/config.ts b/packages/vite/src/node/config.ts
index 9e6b9eff70af4b..2a607dd6ba9948 100644
--- a/packages/vite/src/node/config.ts
+++ b/packages/vite/src/node/config.ts
@@ -1086,7 +1086,7 @@ export function loadEnv(
     const path = lookupFile(envDir, [file], true)
     if (path) {
       const parsed = dotenv.parse(fs.readFileSync(path), {
-        debug: !!process.env.DEBUG || undefined
+        debug: process.env.DEBUG?.includes('vite:dotenv') || undefined
       })
 
       // let environment variables use each other