diff --git a/src/warnings.js b/src/warnings.js
index a9c3a99..7ca34cc 100644
--- a/src/warnings.js
+++ b/src/warnings.js
@@ -54,7 +54,7 @@ export const warnings = Object.freeze({
 });
 
 export function generateWarning(kind, options) {
-  const { location, file = null, value = null, source = "JS-X-Ray"} = options;
+  const { location, file = null, value = null, source = null } = options;
 
   if (kind === "encoded-literal") {
     return Object.assign(
diff --git a/types/warnings.d.ts b/types/warnings.d.ts
index eefd5d1..75edd59 100644
--- a/types/warnings.d.ts
+++ b/types/warnings.d.ts
@@ -25,7 +25,7 @@ interface WarningDefault {
   kind: WarningName;
   file?: string;
   value: string;
-  source: "JS-X-Ray" | "Scanner"; 
+  source?: string; 
   location: WarningLocation | WarningLocation[];
   i18n: string;
   severity: "Information" | "Warning" | "Critical";