diff --git a/src/sandbox/dev_env.md b/src/sandbox/dev_env.md
index 3098834..f2ffab7 100644
--- a/src/sandbox/dev_env.md
+++ b/src/sandbox/dev_env.md
@@ -115,7 +115,7 @@ Following steps are only needed if you want to access the WebUI. It also showcas
 6.  execute `pgrok http 8080` to run the tunnel and expose the webui. Now you are able to access the webui at ´https://{user}.tun.iuk.hdm-stuttgart. 
 
 ### Notes
-Please use the tunnel only temporally and carefully. The tunnel only support http(s) tunnels. Tunneled services are public available and accessible by anyone! If you want to train/finetune any LLMs, please use the [Training Environment](sandbox/training.md) instead.
+Please use the tunnel only temporally and carefully. The tunnel only support http(s) tunnels. Tunneled services are public available and accessible by anyone! If you want to train/finetune any LLMs, please use the [Training Environment](./sandbox/training.md) instead.
 
 ## Useful Links