diff --git a/indexing-service/src/main/java/io/druid/indexing/overlord/autoscaling/ec2/EC2AutoScaler.java b/indexing-service/src/main/java/io/druid/indexing/overlord/autoscaling/ec2/EC2AutoScaler.java
index 6663b7ea4c4..f4d84cfdd42 100644
--- a/indexing-service/src/main/java/io/druid/indexing/overlord/autoscaling/ec2/EC2AutoScaler.java
+++ b/indexing-service/src/main/java/io/druid/indexing/overlord/autoscaling/ec2/EC2AutoScaler.java
@@ -118,7 +118,11 @@ public class EC2AutoScaler implements AutoScaler<EC2EnvironmentConfig>
               .withPlacement(new Placement(envConfig.getAvailabilityZone()))
               .withKeyName(workerConfig.getKeyName())
               .withSubnetId(workerConfig.getSubnetId())
-              .withIamInstanceProfile(workerConfig.getIamProfile().toIamInstanceProfileSpecification())
+              .withIamInstanceProfile(
+                  workerConfig.getIamProfile() == null
+                  ? null
+                  : workerConfig.getIamProfile().toIamInstanceProfileSpecification()
+              )
               .withUserData(userDataBase64)
       );