diff --git a/test/parallel/test-cluster-master-error.js b/test/parallel/test-cluster-master-error.js
index e729963d7df6a9..ae0f655bb8e5d0 100644
--- a/test/parallel/test-cluster-master-error.js
+++ b/test/parallel/test-cluster-master-error.js
@@ -93,7 +93,12 @@ if (cluster.isWorker) {
     existMaster = !!code;
 
     // Give the workers time to shut down
-    setTimeout(checkWorkers, 200);
+    var timeout = 200;
+    if (common.isAix) {
+      // AIX needs more time due to default exit performance
+      timeout = 1000;
+    }
+    setTimeout(checkWorkers, timeout);
 
     function checkWorkers() {
       // When master is dead all workers should be dead to
diff --git a/test/parallel/test-cluster-master-kill.js b/test/parallel/test-cluster-master-kill.js
index 89694ffd115bb4..32f22b0f968b7b 100644
--- a/test/parallel/test-cluster-master-kill.js
+++ b/test/parallel/test-cluster-master-kill.js
@@ -59,9 +59,14 @@ if (cluster.isWorker) {
     assert.equal(code, 0);
 
     // check worker process status
+    var timeout = 200;
+    if (common.isAix) {
+      // AIX needs more time due to default exit performance
+      timeout = 1000;
+    }
     setTimeout(function() {
       alive = isAlive(pid);
-    }, 200);
+    }, timeout);
   });
 
   process.once('exit', function() {