diff --git a/BaragonService/src/main/java/com/hubspot/baragon/service/elb/ApplicationLoadBalancer.java b/BaragonService/src/main/java/com/hubspot/baragon/service/elb/ApplicationLoadBalancer.java
index 2064cf82e..9b97013df 100644
--- a/BaragonService/src/main/java/com/hubspot/baragon/service/elb/ApplicationLoadBalancer.java
+++ b/BaragonService/src/main/java/com/hubspot/baragon/service/elb/ApplicationLoadBalancer.java
@@ -790,10 +790,6 @@ private void guaranteeHasAllTargets(TrafficSource trafficSource,
           } else {
             LOG.debug("Agent {} is already registered", agent);
           }
-        } else {
-          throw new IllegalArgumentException(
-              String.format("Agent instance ID must be present to register with an ELB (Agent %s)",
-                  agent.toString()));
         }
       } catch (Exception exn) {
         LOG.error("Could not create request to register agent {} due to error", agent, exn);