diff --git a/activities.json b/activities.json
index 7254d07..2646f2c 100644
--- a/activities.json
+++ b/activities.json
@@ -955,7 +955,7 @@
     "mdnUrl": null,
     "mozBugUrl": "https://bugzilla.mozilla.org/show_bug.cgi?id=1539075",
     "mozPosition": "neutral",
-    "mozPositionDetail": "JPEG-XL includes features and performance that might differentiate it from other formats, but the benefits it provides are not significant enough on their own to justify the cost of adding another raster image format to the Web.",
+    "mozPositionDetail": "JPEG-XL includes features and performance that might differentiate it from other formats, but the benefits it provides are not significant enough on their own to justify the cost of adding another C++ image decoder to Firefox. A memory-safe decoder would reduce these costs considerably, and we are open to shipping one that meets our requirements.",
     "mozPositionIssue": 522,
     "org": "Other",
     "title": "JPEG-XL",