diff --git a/index.bs b/index.bs
index 23e7ce1..4e3b1ee 100644
--- a/index.bs
+++ b/index.bs
@@ -424,7 +424,7 @@ The {{PerformanceLongAnimationFrameTiming/scripts}} attribute's getter steps are
         readonly attribute DOMHighResTimeStamp executionStart;
         readonly attribute DOMString sourceURL;
         readonly attribute DOMString sourceFunctionName;
-        readonly attribute DOMString sourceCharPosition;
+        readonly attribute long long sourceCharPosition;
         readonly attribute DOMHighResTimeStamp pauseDuration;
         readonly attribute DOMHighResTimeStamp forcedStyleAndLayoutDuration;
         readonly attribute Window? window;
diff --git a/loaf-explainer.md b/loaf-explainer.md
index e1db991..9f0a743 100644
--- a/loaf-explainer.md
+++ b/loaf-explainer.md
@@ -304,7 +304,9 @@ const someLongAnimationFrameEntry = {
 
             // In the case of promise resolver this would be the invoker's source location
             // Note that we expose character position rather than line/column to avoid overhead of line splitting.
-            sourceLocation: "functionName@URL:characterPosition",
+            sourceURL: "https://example.com/big.js",
+            sourceFunctionName: "do_something_long",
+            sourceCharPosition: 10,
 
             // Relationship between the (same-origin) window where this script was executed and
             // this window.