diff --git a/README.adoc b/README.adoc
index 864e7a5..44c9701 100644
--- a/README.adoc
+++ b/README.adoc
@@ -19,6 +19,6 @@ Editor: {Editor}, {Email}
 ==== Partial Specification for ID Match API
 
 link:https://github.internet2.edu/api-schema/idMatchApi/blob/master/id-match-api.yml[YAML mapping of ID Match API Specification 1.2.2] +
-link:https://github.internet2.edu/api-schema/idMatchApi/blob/master/id-match-api.yml[JSON mapping of ID Match API Specification 1.2.2] +
+link:https://github.internet2.edu/api-schema/idMatchApi/blob/master/id-match-api.json[JSON mapping of ID Match API Specification 1.2.2] +
 link:id-match-spec.adoc[ID Match API Specification in asciidoc] +
 link:https://spaces.at.internet2.edu/display/cifer/SOR-Registry+Strawman+ID+Match+API[ID Match API Original Draft]