diff --git a/docs/developer-guide/checks.md b/docs/developer-guide/checks.md
index a48545bb34e..058eae2b42d 100644
--- a/docs/developer-guide/checks.md
+++ b/docs/developer-guide/checks.md
@@ -279,6 +279,9 @@ Each Prowler check has metadata associated which is stored at the same level of
   "Severity": "critical",
   # ResourceType only for AWS, holds the type from here
   # https://docs.aws.amazon.com/securityhub/latest/userguide/asff-resources.html
+  # In case of not existing, use CloudFormation type but removing the "::" and using capital letters only at the beginning of each word. Example: "AWS::EC2::Instance" -> "AwsEc2Instance"
+  # CloudFormation type reference: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-template-resource-type-ref.html
+  # If the resource type does not exist in the CloudFormation types, use "Other".
   "ResourceType": "Other",
   # Description holds the title of the check, for now is the same as CheckTitle
   "Description": "Ensure there are no EC2 AMIs set as Public.",