# \[Fixed\] Webhooks callbacks are not reliable!

**URL:** <https://community.particle.io/t/fixed-webhooks-callbacks-are-not-reliable/11890>\
**Category:** Troubleshooting\
**Created:** [May 18, 2015, 6:18pm UTC](https://community.particle.io/t/fixed-webhooks-callbacks-are-not-reliable/11890 "2015-05-18T18:18:36Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![Dave](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/dave/32/181_2.png) [@Dave](https://community.particle.io/u/Dave)\
**Post date:** [May 19, 2015, 10:03pm UTC](https://community.particle.io/t/fixed-webhooks-callbacks-are-not-reliable/11890/7 "2015-05-19T22:03:25Z")

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Hi @mayhew1955,

There is an bug in the core firmware, where it will stop listening for a particular event subscription. I believe this bug is fixed in the new photon firmware, and will be available to the core soon as we continue to upgrade our dev tools to target alternate firmware versions. There have been a few workarounds posted about the subscription issue on the forums, here’s one: [Losing Spark.subscribe() connection/subscription](https://community.particle.io/t/loosing-spark-subscribe-connection-subscription/6518/5?u=dave)

> <https://github.com/particle-iot/firmware/issues/278>

Thanks,  
David

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