diff --git a/clouddriver-ecs/src/main/java/com/netflix/spinnaker/clouddriver/ecs/deploy/validators/EcsCreateServerGroupDescriptionValidator.java b/clouddriver-ecs/src/main/java/com/netflix/spinnaker/clouddriver/ecs/deploy/validators/EcsCreateServerGroupDescriptionValidator.java
index 4375f44e196..ec65733ab90 100644
--- a/clouddriver-ecs/src/main/java/com/netflix/spinnaker/clouddriver/ecs/deploy/validators/EcsCreateServerGroupDescriptionValidator.java
+++ b/clouddriver-ecs/src/main/java/com/netflix/spinnaker/clouddriver/ecs/deploy/validators/EcsCreateServerGroupDescriptionValidator.java
@@ -122,6 +122,18 @@ public void validate(List priorDescriptions, Object description, Errors errors)
       } else {
         rejectValue(errors, "reservedMemory", "not.nullable");
       }
+    } else {
+      // Verify load balanced services w/ an artifact specify which container to load balance on
+      boolean hasTargetGroup =
+          createServerGroupDescription.getTargetGroup() != null
+              && !createServerGroupDescription.getTargetGroup().isEmpty();
+      boolean hasLoadBalancedContainer =
+          createServerGroupDescription.getLoadBalancedContainer() != null
+              && !createServerGroupDescription.getLoadBalancedContainer().isEmpty();
+
+      if (hasTargetGroup && !hasLoadBalancedContainer) {
+        rejectValue(errors, "loadBalancedContainer", "not.nullable");
+      }
     }
 
     if (createServerGroupDescription.getContainerPort() != null) {
diff --git a/clouddriver-ecs/src/test/groovy/com/netflix/spinnaker/clouddriver/ecs/deploy/validators/EcsCreateServergroupDescriptionValidatorSpec.groovy b/clouddriver-ecs/src/test/groovy/com/netflix/spinnaker/clouddriver/ecs/deploy/validators/EcsCreateServergroupDescriptionValidatorSpec.groovy
index 4f3dc373838..47765f90810 100644
--- a/clouddriver-ecs/src/test/groovy/com/netflix/spinnaker/clouddriver/ecs/deploy/validators/EcsCreateServergroupDescriptionValidatorSpec.groovy
+++ b/clouddriver-ecs/src/test/groovy/com/netflix/spinnaker/clouddriver/ecs/deploy/validators/EcsCreateServergroupDescriptionValidatorSpec.groovy
@@ -119,6 +119,19 @@ class EcsCreateServergroupDescriptionValidatorSpec extends AbstractValidatorSpec
     0 * errors.rejectValue(_, _)
   }
 
+  void '(with artifact) should fail when load balancer specified but loadBalanced container missing'() {
+    given:
+    def description = getDescription()
+    description.useTaskDefinitionArtifact = true
+    def errors = Mock(Errors)
+
+    when:
+    validator.validate([], description, errors)
+
+    then:
+    1 * errors.rejectValue('loadBalancedContainer', "${getDescriptionName()}.loadBalancedContainer.not.nullable")
+  }
+
   @Override
   AbstractECSDescription getNulledDescription() {
     def description = (CreateServerGroupDescription) getDescription()