diff --git a/src/extensions/exception-autocapture/stack-trace.ts b/src/extensions/exception-autocapture/stack-trace.ts
index 7c1cbde44..868ac2744 100644
--- a/src/extensions/exception-autocapture/stack-trace.ts
+++ b/src/extensions/exception-autocapture/stack-trace.ts
@@ -33,11 +33,10 @@ export type StackLineParserFn = (line: string) => StackFrame | undefined
 export type StackLineParser = [number, StackLineParserFn]
 
 export interface StackFrame {
-    lang: string
+    platform: string
     filename?: string
     function?: string
     module?: string
-    platform?: string
     lineno?: number
     colno?: number
     abs_path?: string
@@ -64,7 +63,7 @@ const GECKO_PRIORITY = 50
 
 function createFrame(filename: string, func: string, lineno?: number, colno?: number): StackFrame {
     const frame: StackFrame = {
-        lang: 'javascript',
+        platform: 'javascript',
         filename,
         function: func === '<anonymous>' ? UNKNOWN_FUNCTION : func,
         in_app: true, // All browser frames are considered in_app