diff --git a/.changeset/happy-houses-allow.md b/.changeset/happy-houses-allow.md
new file mode 100644
index 0000000..50e2df1
--- /dev/null
+++ b/.changeset/happy-houses-allow.md
@@ -0,0 +1,5 @@
+---
+'@wanews/nx-pulumi': minor
+---
+
+Hide undefinded log when the env vars are not defined
diff --git a/libs/pulumi/src/executors/up/executor.ts b/libs/pulumi/src/executors/up/executor.ts
index 6913c0a..05e0531 100644
--- a/libs/pulumi/src/executors/up/executor.ts
+++ b/libs/pulumi/src/executors/up/executor.ts
@@ -92,7 +92,10 @@ export default async function runUpExecutor(
     ]
 
     console.log(`> pulumi ${pulumiArgs.join(' ')}`)
-    console.log(`${options.envVars}`)
+    if (options.envVars) {
+        console.log(`${options.envVars}`)
+    }
+
     const pulumi = execa('pulumi', pulumiArgs, {
         stdio: [process.stdin, process.stdout, process.stderr],
         env: envObject,