diff --git a/src/execute/index.js b/src/execute/index.js
index 98ff85a87..4754b64c7 100755
--- a/src/execute/index.js
+++ b/src/execute/index.js
@@ -268,6 +268,7 @@ export function buildRequest(options) {
 
 const stripNonAlpha = str => (str ? str.replace(/\W/g, '') : null)
 
+// be careful when modifying this! it is a publicly-exposed method.
 export function baseUrl(obj) {
   const specIsOAS3 = isOAS3(obj.spec)