diff --git a/relationships/synthesis/APM-APPLICATION-to-INFRA-KINESSISDELIVERYSTREAM.yml b/relationships/synthesis/APM-APPLICATION-to-INFRA-KINESSISDELIVERYSTREAM.yml
index c7ac946f4..1a29fb03e 100644
--- a/relationships/synthesis/APM-APPLICATION-to-INFRA-KINESSISDELIVERYSTREAM.yml
+++ b/relationships/synthesis/APM-APPLICATION-to-INFRA-KINESSISDELIVERYSTREAM.yml
@@ -9,7 +9,7 @@ relationships:
       - attribute: cloud.platform
         anyOf: [ "aws_kinesis_delivery_streams" ]
       - attribute: cloud.resource_id
-        regex: "^arn:aws:firehose:([^:]*):([^:]*):deliverystream\/([^:]*)"
+        regex: "^arn:aws:firehose:([^:]*):([^:]*):deliverystream/([^:]*)"
     relationship:
       expires: P75M
       relationshipType: CALLS